Lab. Programs in C

2012
Saket Kumar Pathak
Software Developer
3D Graphics

[Programming in C of College days ]
Programs are tested with compiler and respective IDEs Bloodshed-DevC++, Visual Studio
2008, Qt 4.2. These are running successfully with console in windows platform. So just
enjoy coding. For Visual Studio 2008 and Qt 4.2, please notice the note at the end.

Programming in C of College days

1. WAP to convert
a. Binary to Decimal
b. Decimal to Binary

Program:
Binary to Decimal:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#define DATA_SIZE 32

char* rev_data_seq(char* chp_data_seq);

void bin_to_dec()
{
printf("WAP to convert :nt-> Binary to Decimal");
printf("nLimitation: nt-> Fractional Numbers will not
considered. nt-> Binary format is limited to 32 bit.
nt-> Input will considered in Unsigned format.");
printf("nnn");

int i_res, i_num, i_count;
char ch_digit;
char* chp_data_seq = (char*)malloc(sizeof(char) *
DATA_SIZE);

i_res = i_num = i_count = 0;

printf("Please Enter any number (Binary in base 2): ");

while((ch_digit = getchar()) != 'n')
{
if((ch_digit == '0')||(ch_digit == '1'))
{
*(chp_data_seq + i_count) = ch_digit;
i_count++;
}
else if(i_count > 32)
{
i_res = 0;
printf("nInvalid Input.n");
break;
}
else

M.Tech – CSE – Weekend (2012 – 2015) Page 2


{
i_res = 0;
printf("nInvalid Input.n");
break;
}
}
*(chp_data_seq + i_count) = '0';

chp_data_seq = rev_data_seq(chp_data_seq);

i_count = 0;
while (*(chp_data_seq + i_count) != '0')
{
ch_digit = *(chp_data_seq + i_count);
if(ch_digit == '0')
i_num = (int)(0 * pow(2.0f, i_count));
else if(ch_digit == '1')
i_num = (int)(1 * pow(2.0f, i_count));
i_res += i_num;
i_count++;
}

printf("nResultant: %d", i_res);
}

char* rev_data_seq(char* chp_data_seq)
{
char* temp_seq = (char*)malloc(sizeof(char) *
(strlen(chp_data_seq) + 1));

int i_count = 0;
int i_rev = (strlen(chp_data_seq)-1);
while (*(chp_data_seq + i_count) != '0')
{
*(temp_seq + i_rev) = *(chp_data_seq + i_count);
i_count++;
i_rev--;
}

*(temp_seq + i_count) = '0';

return temp_seq;
}



int main()
{
dec_to_bin();

getch();
return 0;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

Decimal to Binary:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#define DATA_SIZE 32

void dec_to_bin()
{
printf("WAP to convert :nt-> Decimal to Binary");
printf("nLimitation: nt-> Fractional Numbers will not
considered. nt-> Binary format is limited to 32 bit.
nt-> Generated result will be in Unsigned format.");
printf("nnn");

int i_num;
printf("Please Enter any number (Decimal in base 10): ");
scanf("%d", &i_num);

int* i_res = (int*)malloc(sizeof(int) * DATA_SIZE);
int i_count = 0;
while(i_count < DATA_SIZE)
{
*(i_res + i_count) = 0;
i_count++;
}

printf("n");
i_count = (DATA_SIZE-1);
int i_quotent, i_remainder;
do
{
i_quotent = i_num / 2;



i_remainder = i_num % 2;
i_num = i_quotent;
*(i_res + i_count) = i_remainder;
i_count--;
}
while(i_quotent > 0);

printf("nResultant: ");
i_count = 0;
while(i_count < DATA_SIZE)
{
printf("%d", *(i_res + i_count));
i_count++;
}
}

int main()
{
dec_to_bin();

getch();
return 0;
}



2. WAP to generate prime numbers within a given range.

Program:

#include <stdio.h>
#include <stdbool.h>

int i_lr, i_hr, i_count_prime;
int *i_collector;
bool b_check;

void set_argument()
{
printf("Please Enter Number to for lower limit of Range: ");
scanf("%d", &i_lr);
printf("Please Enter Number to for Upper limit of Range: ");
scanf("%d", &i_hr);

printf("nnn");
}

void find_numbers()
{
printf(" Given Range to find prime numbers is %d - %d.n",
i_lr, i_hr);

i_collector = (int*)malloc(sizeof(int) * 1024);
*i_collector = 1;

{
int i_count;
for(i_count = i_lr; i_count <= i_hr; ++i_count)
{
if(i_count > 3)
{
int i_loopcount;
for(i_loopcount = 2; i_loopcount <= (i_count/2); ++i_loopcount)
{
if((i_count % i_loopcount) == 0)
{
b_check = true;
break;
}
else
b_check = false;
}
if(!b_check)



{
*i_collector = i_count;
i_collector+=sizeof(int);
i_count_prime++;
}
}
else
{
*i_collector = i_count;
i_collector+=sizeof(int);
printf("n The Number 2 and 3 are prime.");
}
}
}
printf("nnn");
}

void show_result()
{
i_collector-=sizeof(int);

printf("Prime Number So obtained: n");
printf("Index t PrimeNumbern");

int i_idx = 1;
while(i_count_prime > 0)
{
printf(" %dt %dn", i_idx, *i_collector);
i_collector = i_collector - sizeof(int);
--i_count_prime;
++i_idx;
}
}
int main()
{
printf("WAP to Find Prime numbers with a given range.");
printf("nnn");

set_argument();
find_numbers();
show_result();

printf("nnn");
system("pause");
return 0;
}



3. WAP to generate following patterns, if line =5
(a)

1
0 1
1 0 1
0 1 0 1
1 0 1 0 1

(b)

*
***
* ****
*******
*********

Program:

(a)

#include <stdio.h>

int i_number;

void set_argument()
{
printf("***To Draw The given pattern as per user
value.***nnn");

printf("n");
printf("t1n");
printf("t01n");
printf("t101n");
printf("t0101n");
printf("t10101n");
printf("n");

printf("Please Enter a number to draw pattern: ");
scanf("%d", &i_number);

printf("nnn");
}



void draw_pattern()
{
int container[2] = {1,0};

unsigned int ui_row, ui_col;
for(ui_row = 1; ui_row <= (unsigned int)i_number; ++ui_row)
{
printf("nt");
int count;
bool b_flag = true;
for(ui_col = 1; ui_col <= ui_row; ++ui_col)
{
if(b_flag)
{
if((ui_row%2)==0)
count = 1;
else
count = 0;
b_flag = false;
}

printf("%d", container[count]);

if(count==1)
count = 0;
else
count = 1;
}
}
}

int main()
{
set_argument();
draw_pattern();

getch();
return 0;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~



(b)

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t *n");
printf("t ***n");
printf("t *****n");
printf("t *******n");
printf("t*********n");
printf("n");


printf("nnn");
}

void draw_pattern()
{
unsigned int ui_row, ui_blank, ui_col;
for(ui_row = 0; ui_row <= (unsigned int)i_number; ++ui_row)
{
printf("nt");
for(ui_blank = 1; ui_blank <= (i_number-ui_row);
++ui_blank)
printf(" ");

for(ui_col = 1; ui_col <= (2*ui_row + 1); ++ui_col)
printf("*");
}
}



int main()
{
set_argument();
draw_pattern();

getch();
return 0;
}



4. WAP to generate recursive Fibonacci series.

Program:

#include <stdio.h>

void create_fibonacci(bool flag, unsigned int i_count);

int main()
{
printf("WAP to generate Fibonacci series using
recursion.n");
printf("nnn");

int i_term, i_rec;
unsigned int ui_count;
printf("Enter a term to create fibonacci: ");
scanf("%d", &i_term);

printf("Fibonacci: 0 1");
create_fibonacci(true, (i_term-2));

system("pause");
return 0;
}

void create_fibonacci(bool flag, unsigned int i_count)
{
static int i_num_1, i_num_2, i_num_3;

if (flag)
{
i_num_1 = 0;
i_num_2 = 1;
flag = false;
}

if (i_count > 0)
{
i_num_3 = i_num_1 + i_num_2;
printf(" %d", i_num_3);

i_num_1 = i_num_2;
i_num_2 = i_num_3;
create_fibonacci(false, --i_count);
}



printf("n");
}



5. WAP to perform binary search by using
a. Recursion.
b. Non recursion.

Program:

a. Recursion

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

bool check_item_order(int* i_storage)
{
//Function to check the Item - List is in Sorted order.
return true;
}

void recursive_bin_search(int* i_storage, int i_srch_item, int
i_low, int i_mid, int i_hi)
{
if(i_low < i_hi)
{
if(i_storage[i_mid] == i_srch_item)
{
printf("Item (%d) is found at position: %d", i_srch_item,
i_mid);
}
else if(i_storage[i_mid] > i_srch_item)
{
i_hi = i_mid;
i_mid = (i_low + i_hi)/2;
recursive_bin_search(i_storage, i_srch_item, i_low, i_mid,
i_hi);
}
else if(i_storage[i_mid] < i_srch_item)
{
i_low = i_mid;
recursive_bin_search(i_storage, i_srch_item, i_low, i_mid,
i_hi);
}
}

}



void recursive_binary_search(int* i_storage, int i_num_item)
{
bool b_check = check_item_order(i_storage);

printf("Your Storage Items are: nt");

int i_loop_count;
for(i_loop_count = 0; i_loop_count < i_num_item;
++i_loop_count)
{
printf("%d, ", i_storage[i_loop_count]);
}

printf("nnn");

int i_srch_item;
printf("Please Enter the item (number) to search: ");
scanf("%d", &i_srch_item);

printf("nnn");
int i_low = 0;
int i_hi = i_num_item;
int i_mid = (i_low + i_hi)/2;

if(b_check)
recursive_bin_search(i_storage, i_srch_item, i_low,
i_mid, i_hi);
else
printf("nItems are not in Order.n");
}

void binary_search(void)
{
printf("WAP for Binary - Search.");
printf("nLimitation: nt-> Items are restrickted with integer
number.nt-> Starting index of storage is 0.");
printf("nnn");

int i_storage[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

recursive_binary_search(i_storage,
(sizeof(i_storage)/sizeof(int)));
}



int main()
{
binary_search();

printf("nnn");
getch();
return 0;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

b. Non recursion

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

bool check_item_order(int* i_storage)
{
return true;
}

void iterative_binary_search(int* i_storage, int i_num_item)
{
bool b_check = check_item_order(i_storage);

printf("Your Storage Items are: nt");

int i_loop_count;
for(i_loop_count = 0; i_loop_count < i_num_item;
++i_loop_count)
{
printf("%d, ", i_storage[i_loop_count]);
}

printf("nnn");

int i_srch_item;
printf("Please Enter the item (number) to search: ");
scanf("%d", &i_srch_item);

printf("nnn");



printf("Result: ");

int i_low = 0;
int i_hi = i_num_item;
int i_mid = (i_low + i_hi)/2;
if (b_check)
{
while(i_low < i_hi)
{
if(i_storage[i_mid] == i_srch_item)
{
printf("Item (%d) is found at position: %d", i_srch_item,
i_mid);
break;
}
else if(i_storage[i_mid] > i_srch_item)
{
i_hi = i_mid;
}
else if(i_storage[i_mid] < i_srch_item)
{
i_low = i_mid;
}
}
}
}

void binary_search(void)
{
printf("WAP for Binary - Search.");
printf("nLimitation: nt-> Items are restrickted with integer
number.nt-> Starting index of storage is 0.");
printf("nnn");

int i_storage[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

iterative_binary_search(i_storage,
(sizeof(i_storage)/sizeof(int)));
}



int main()
{
binary_search();

printf("nnn");
getch();
return 0;
}



6. WAP for Tower of Hanoi. Also draw the recursive tree for n=4 disks.

Program:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

void generate_moves_toh(int i_disk_num, char from_peg, char
to_peg, char aux_peg)
{
/* If only 1 disk, make the move and return */
if(i_disk_num == 1)
{
printf("nMove disk 1 from peg %c to peg %c",
from_peg, to_peg);
return;
}

/* Move top n-1 disks from A to B, using C as auxiliary */
generate_moves_toh(i_disk_num-1, from_peg, aux_peg,
to_peg);

printf("nMove disk %d from peg %c to peg %c", i_disk_num,
from_peg, to_peg);

/* Move n-1 disks from B to C using A as auxiliary */
generate_moves_toh(i_disk_num-1, aux_peg, to_peg,
from_peg);
}

void gen_tow_of_honoi()
{
printf("WAP to display the steps required in solving 'Tower
of Hanoi' for 'n' number of disks.");
printf("nLimitation: nt-> Disks are represented as
integral numbers in assending order.");
printf("nnn");

int i_num_disk;
printf("Enter the number of disks : ");
scanf("%d",&i_num_disk);
printf("The Tower of Hanoi involves the moves :nn");

generate_moves_toh(i_num_disk, 'A', 'C', 'B');



}

int main()
{
gen_tow_of_honoi();

printf("nnn");
getch();
return 0;
}



7. WAP to generate Pascal triangle viz. if line =5
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1

Program:

#include <stdio.h>

int main()
{
printf("Pascal's Seriesn");

printf("nnn");

int i_num_row;
printf("Enter number of rows: ");
scanf("%d", &i_num_row);

int arr[6], arr_temp[6];

static bool flag = true;

int i_row_count, i_col_count, i_count, i_counter;
for (i_row_count = 1; i_row_count <= i_num_row;
++i_row_count)
{
for (i_col_count = 1; i_col_count <= i_num_row;
++i_col_count)
{
for (i_count = 0; i_count <= i_row_count; ++i_count)
{
if (flag)
{
arr[i_count] = i_count;
if (arr[i_count] != 0)
printf("t%d", arr[i_count]);
}
else if(i_count > 0)
{
arr_temp[i_count] = arr[i_count-1] +
arr[i_count];
printf("t%d", arr_temp[i_count]);
}



else
{
arr_temp[i_count] = i_count;
}
}
for (i_counter = i_count; i_counter <= (i_num_row+1);
++i_counter)
{
if (flag)
{
arr[i_counter] = 0;
}
else if(i_counter > 0)
{
arr_temp[i_counter] = arr[i_counter-1] +
arr[i_counter];
}
}
flag = false;
break;
}
if (i_row_count > 1)
for (i_count = 1; i_count <= i_num_row; ++i_count)
{
arr[i_count] = arr_temp[i_count];
}
printf("n");
}

system("pause");
return 0;
}



8. Write following programs by using passing array to function :
a) Bubble sort
b) Insertion sort
c) Selection sort

Program:

a) Bubble sort

#include <stdio.h>

int* bubble_sort(int i_store[], int i_size);
int* get_elem(int i_size);
void disp_elem(int i_store[], int i_size);

int main()
{
printf("WAP of Bubble sort by using array.");
printf("nnn");

int i_store_size;
printf("Enter the total number of items to store: ");
scanf("%d", &i_store_size);

int* ip_store = get_elem(i_store_size);
ip_store = bubble_sort(ip_store, i_store_size);
disp_elem(ip_store, i_store_size);

printf("nnn");
system("pause");
return 0;
}

int* get_elem(int i_size)
{
int* ip_store = malloc(sizeof(int) * i_size);
int i_count = 0;
while (i_size)
{
printf("nEnter item for index - %d : ", i_count);
scanf("%d", (ip_store+i_count));
i_count++;
i_size--;
}

return ip_store;



}

int* bubble_sort(int i_store[], int i_size)
{
int i_temp;
int i_count_0, i_count_1;
for (i_count_0 = (i_size - 1); i_count_0 > 0; --i_count_0)
{
for (i_count_1 = 1; i_count_1 <= i_count_0;
++i_count_1)
{
if (i_store[i_count_1 - 1] > i_store[i_count_1])
{
i_temp = i_store[i_count_1 - 1];
i_store[i_count_1 - 1] = i_store[i_count_1];
i_store[i_count_1] = i_temp;
}
}
}

return i_store;
}

void disp_elem(int i_store[], int i_size)
{
printf("nDisplaying Elements of store: n");
int i_ndx = 0;
while (i_size)
{
printf("nIndex(%d) : %d", i_ndx, i_store[i_ndx]);
i_ndx++;
i_size--;
}
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~



Insertion sort

#include <stdio.h>

int* insertion_sort(int i_store[], int i_size);

int main()
{
printf("WAP of Insertion sort by using array.");
printf("nnn");

int i_store_size;

ip_store = insertion_sort(ip_store, i_store_size);

printf("nnn");
system("pause");
return 0;
}

{
int i_count = 0;
while (i_size)
{
i_count++;
i_size--;
}

return ip_store;
}

int* insertion_sort(int i_store[], int i_size)
{
int i_temp;
int i_count_0, i_count_1, i_count_2;
for (i_count_0 = 1; i_count_0 <= (i_size-1); ++i_count_0)
{



for (i_count_1 = 0; i_count_1 < i_count_0; ++i_count_1)
{
if (i_store[i_count_1] > i_store[i_count_0])
{
i_temp = i_store[i_count_1] ;
i_store[i_count_1] = i_store[i_count_0] ;

for (i_count_2 = i_count_0; i_count_2 >
i_count_1; i_count_2--)
i_store[i_count_2] = i_store[i_count_2
- 1] ;

i_store[i_count_2 + 1] = i_temp ;
}
}
}

return i_store;
}

{
int i_ndx = 0;
while (i_size)
{
i_ndx++;
i_size--;
}
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~



Selection sort

#include <stdio.h>

int* selection_sort(int i_store[], int i_size);

int main()
{
printf("WAP of Selection sort by using array.");
printf("nnn");

int i_store_size;

ip_store = selection_sort(ip_store, i_store_size);

printf("nnn");
system("pause");
return 0;
}

{
int i_count = 0;
while (i_size)
{
i_count++;
i_size--;
}

return ip_store;
}

int* selection_sort(int i_store[], int i_size)
{
int i_temp;
int i_count_0, i_count_1;
for (i_count_0 = 0; i_count_0 < (i_size-1); ++i_count_0)
{



for (i_count_1 = (i_count_0+1); i_count_1 < i_size;
++i_count_1)
{
if (i_store[i_count_0] > i_store[i_count_1])
{
i_temp = i_store[i_count_0];
i_store[i_count_0] = i_store[i_count_1];
i_store[i_count_1] = i_temp;
}
}
}

return i_store;
}

{
int i_ndx = 0;
while (i_size)
{
i_ndx++;
i_size--;
}
}



9. WAP for matrix multiplication of given order.

Program:

#include <stdio.h>

void get_matrices(void);
void mult_matrices(void);
void disp_matrix(void);

int **mat_1;
int **mat_2;
int **res_mat;

int i_m1_row, i_m1_col;
int i_m2_row, i_m2_col;

int main()
{
printf("WAP for matrix multiplication of given order.n");
printf("nnn");

get_matrices();
mult_matrices();
disp_matrix();

system("pause");
return 0;
}

void get_matrices()
{
printf("Enter number of rows for Matrix-1: ");
scanf("%d", &i_m1_row);
printf("Enter number of columbs for Matrix-1: ");
scanf("%d", &i_m1_col);

mat_1 = malloc(sizeof(int) * i_m1_row);

int i_row_count, i_col_count;
printf("Enter elements for Matrix-1:n");
for (i_row_count = 0; i_row_count < i_m1_row;
++i_row_count)
{
*(mat_1+i_row_count) = malloc(sizeof(int) * i_m1_col);



for (i_col_count = 0; i_col_count < i_m1_col;
++i_col_count)
{
printf("Element[%d][%d]: ", i_row_count,
i_col_count);
scanf("%d",&(*(*(mat_1+i_row_count)+i_col_count)));
*(mat_1+i_row_count)+i_col_count;
}
}

printf("nnn");

printf("Enter number of rows for Matrix-2: ");
scanf("%d", &i_m2_row);
printf("Enter number of columbs for Matrix-2: ");
scanf("%d", &i_m2_col);

mat_2 = malloc(sizeof(int) * i_m2_row);

printf("Enter elements for Matrix-2:n");
++i_row_count)
{
*(mat_2+i_row_count) = malloc(sizeof(int) * i_m2_col);
++i_col_count)
{
printf("Element[%d][%d]: ", i_row_count,
i_col_count);
scanf("%d",&(*(*(mat_2+i_row_count)+i_col_count)));
*(mat_2+i_row_count)+i_col_count;
}
}

printf("nnn");

++i_row_count)
{
++i_col_count)
{
printf("Element[%d][%d] - Mat-1: %dn",
i_row_count, i_col_count, mat_1[i_row_count][i_col_count]);
}
}
printf("nnn");



++i_row_count)
{
++i_col_count)
{
printf("Element[%d][%d] - Mat-2: %dn",
i_row_count, i_col_count, mat_2[i_row_count][i_col_count]);
}
}
printf("n");
}

void mult_matrices(void)
{
printf("nnn");

int i_row_count, i_col_count, i_count;
res_mat = malloc(sizeof(int) * i_m1_row);

printf("Resultant Matrix: Row- %dt Column- %dn",
i_m1_row, i_m2_col);
++i_row_count)
{
*(res_mat+i_row_count) = malloc(sizeof(int) *
i_m2_col);
++i_col_count)
{
*(*(res_mat+i_row_count)+i_col_count) = 0;
for (i_count = 0; i_count < i_m1_row; ++i_count)
{
*(*(res_mat+i_row_count)+i_col_count) +=
(*(*(mat_1 + i_row_count)+i_count)) * (*(*(mat_2 +
i_count)+i_col_count));
}
}
}

printf("nnn");
}



void disp_matrix(void)
{
int i_row_count, i_col_count;
++i_row_count)
{
++i_col_count)
{
printf("Resultant[%d][%d] - Res-2: %dn",
i_row_count, i_col_count,
*(*(res_mat+i_row_count)+i_col_count));
}
}

printf("nnn");
}



10. WAP without using string‟s function for :
a. Copy of one string in another
b. Concatenation of string
c. Comparison of strings
d. Reverse the string

Program:

a. Copy of one string in another

#include <stdio.h>

#define STR_SIZE 1024

char* get_string(void);
char* str_copy(char* gvn_str);

int main()
{
printf("WAP without using string's function to Copy one
string into another.");
printf("nnn");

char* temp = malloc(sizeof(char) * STR_SIZE);
temp = get_string();

printf("nnn");

printf("Copied String: %s", str_copy(temp));

printf("nnn");
system("pause");
return 0;
}

char* get_string(void)
{
char* chp_var1;
char ch_temp;
int i_num = 0;

chp_var1 = malloc(sizeof(char) * STR_SIZE);

printf("Please Enter an string to copy ('n' is
terminating character): ");
while ((ch_temp = getchar()) != 'n')
{



*(chp_var1 + i_num) = ch_temp;
i_num++;
}

*(chp_var1 + i_num) = '0';

return chp_var1;
}

char* str_copy(char* gvn_str)
{
char* chp_var;
int i_num = 0;

chp_var = malloc(sizeof(char) * STR_SIZE);

while (*(gvn_str + i_num) != '0')
{
*(chp_var + i_num) = *(gvn_str + i_num);
i_num++;
}

*(chp_var + i_num) = '0';

return chp_var;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

b. Concatenation of string

#include <stdio.h>


char* concat_str(char* chp_var1, char* chp_var2);
unsigned int get_str_len(char* chp_var);

int main()
{
printf("WAP without using string's function for
Concatenating of two strings. ");
char* chp_var1;
char* chp_var2;
char* chp_res;



printf("nnn");


printf("Please Enter an string: ");
scanf("%s", chp_var1);
printf("nn");
printf("Please Enter another string to concatenate: ");

chp_res = concat_str(chp_var1, chp_var2);
printf("nResultant String (after Copying): %s", chp_res);

printf("n");
system("pause");
return 0;
}

char* concat_str(char* chp_var1, char* chp_var2)
{
size_t size = get_str_len(chp_var1) +
get_str_len(chp_var2);

chp_var1 = (char*)realloc(chp_var1, (size+1));

unsigned int ui_count = 0;
while (*(chp_var1+ui_count) != '0')
ui_count++;

while (*chp_var2 != '0')
{
*(chp_var1+ui_count) = *chp_var2;

ui_count++;
chp_var2++;
}
*(chp_var1+ui_count) = '0';

return chp_var1;
}

unsigned int get_str_len(char* chp_var)
{



while (*chp_var != '0')
{
ui_count++;
chp_var++;
}

return ui_count;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

c. Comparison of strings

#include <stdio.h>


bool comp_str(char* chp_var1, char* chp_var2);

int main()
{
printf("WAP without using string's function to Comparison of
strings.");
char* chp_var1;
char* chp_var2;
bool b_res;

printf("nnn");


printf("nn");
printf("Please Enter another string to compare: ");

b_res = comp_str(chp_var1, chp_var2);

if (b_res)
printf("nStrings are same.");
else
printf("nStrings are not same.");



printf("n");
system("pause");
return 0;
}

bool comp_str(char* chp_var1, char* chp_var2)
{
while (*(chp_var1+ui_count)== *(chp_var2+ui_count))
{
if (*(chp_var1+ui_count) == '0')
return true;
ui_count++;
}

return false;
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

d. Reverse the string

#include <stdio.h>


char* comp_str(char* chp_var1);
unsigned int get_str_len(char* chp_var);

int main()
{
printf("WAP without using string's function to Reverse the
string.");
char* chp_var1;
char* chp_res;

printf("nnn");



chp_res = comp_str(chp_var1);



printf("nResultant Strings (after reverse): %s", chp_res);

printf("n");
system("pause");
return 0;
}

char* comp_str(char* chp_var1)
{
size_t size = get_str_len(chp_var1);

char* chp_str = malloc(size+1);

unsigned int ui_rev_idx = (size - 1);
while (*(chp_var1+ui_count) != '0')
{
*(chp_str+ui_rev_idx) = *(chp_var1+ui_count);
ui_rev_idx--;
ui_count++;
}
*(chp_str+size) = '0';

return chp_str;
}

unsigned int get_str_len(char* chp_var)
{
while (*chp_var != '0')
{
ui_count++;
chp_var++;
}

return ui_count;
}



11. WAP to check that given string is palindrome or not?

Program:

#include <stdio.h>

bool check(char* usr_str, char* chk_str);

int main()
{
printf("WAP to check given string is Palindrome.n");
printf("nnn");

bool b_check;
char* chp_var = malloc(sizeof(char) * 1024);
char* chk_var = malloc(sizeof(char) * 1024);
char* temp = chp_var;
unsigned int ui_no_char = 0;

printf("Enter string to check palindrome: ");
while ((*chp_var = getchar())!='n')
{
*chk_var = *chp_var;
chk_var++;
chp_var++;
ui_no_char++;
}
*chp_var = '0';
chp_var = temp;
chk_var--;

b_check = check(chp_var, chk_var);
if (b_check)
printf("nResult: %s, is palindrome.n", chp_var);
else
printf("nResult: %s, isn't palindrome.n", chp_var);

system("pause");
return 0;
}



bool check(char* usr_str, char* chk_str)
{
unsigned int ui_count, ui_chk;
ui_chk = ui_count = 0;
while (*usr_str != '0')
{
ui_count++;
if (*usr_str != *chk_str)
{
return false;
}
else
{
ui_chk++;
}
usr_str++;
chk_str--;
}

if (ui_count == ui_chk)
return true;
}



12. WAP to store the information about book‟s Title, Author, Page, &
Price. Display the information by using pointer & structure with
following restriction :
a. Display elements by passing one element at time.
b. By passing all elements at time.

Program:

#include <stdio.h>
#include <ctype.h>
#include <string.h>

#define HEAD_SIZE 9
#define DIGIT_SIZE 9
#define STRING_LEN 30

void get_choice(void);
bool store_info(void);
bool disp_one_elem(void);
bool disp_all_elem(void);
char* int_to_alpha(int i_num);

struct bk_detail
{
char* chp_stitle;
char* chp_sname;
int i_spage;
int i_sprice;
};

int main()
{
printf("WAP to store the information about book's Title,
Author, Page, & Price. nDisplay the information by using
pointer & structure with following restriction :");
printf("nt-> Display elements by passing one element at
time. nt-> By passing all elements at time.");
printf("nnn");

char ch_temp;
FILE* fp;
fp = fopen("book_idx_mgr.txt", "r+");
ch_temp = fgetc(fp);
fclose(fp);

if (ch_temp == -1)



{
printf("No record inserted.n");
get_choice();
}
else
{
printf("nBook Index File is ready for use.n");
get_choice();
}

fclose(fp);

printf("nnn");
system("pause");
return 0;
}

char* int_to_alpha(int i_num)
{
int i_count, i_sign, i_rev_count;
char* chp_num = malloc(sizeof(char) * DIGIT_SIZE);
char* chp_rev_num = malloc(sizeof(char) * DIGIT_SIZE);

i_sign = 0;
i_count = i_rev_count = 0;
if (i_num == 0)
{
*(chp_num + i_count) = '0';
i_count++;
}
else if (i_num < 0)
{
i_sign = -1;
i_num *= -1;
}
while (i_num > 0)
{
*(chp_num + i_count) = i_num % 10 + '0';
i_count++;

i_num /= 10;
}
if (i_sign < 0)
{
*(chp_num + i_count) = '-';
i_count++;
}




i_count = 0;
i_rev_count = strlen(chp_num)-1;

while (*(chp_num + i_count) != '0')
{
*(chp_rev_num + i_count) = *(chp_num + i_rev_count);
i_count++;
i_rev_count--;
}

*(chp_rev_num + i_count) = '0';

return chp_rev_num;
}

void get_choice(void)
{
bool (*pfunc_seq[3])();
pfunc_seq[0] = store_info;
pfunc_seq[1] = disp_one_elem;
pfunc_seq[2] = disp_all_elem;

printf("nYour choices for operation:n");
printf("nt a. To insert record (press) - 1n");
printf("nt b. To display complete info of the nt book
(your selected name of book) (press) - 2n");
printf("nt a. To display all records (press) - 3n");

printf("nPlease Enter your choice: ");
char ch_choice;
if ((ch_choice = getchar()) == '1')
{
(*pfunc_seq[0])();
}
else if (ch_choice == '2')
{
(*pfunc_seq[1])();
}
else if (ch_choice == '3')
{
(*pfunc_seq[2])();
}
else
printf("nChoice is invalid.n");
}



bool store_info()
{
FILE* fp;
fp = fopen("book_idx_mgr.txt", "a+");
printf("nTo store - records.n");

char* chp_bk_title = malloc(sizeof(char) * STRING_LEN);
char* chp_bk_author = malloc(sizeof(char) * STRING_LEN);
char* chp_bk_page = malloc(sizeof(char) * STRING_LEN);
char* chp_bk_price = malloc(sizeof(char) * STRING_LEN);
int i_temp;

printf("Please Enter: n");
printf("tTitle: ");
scanf("%s", chp_bk_title);
fputs("Title: ", fp);
fputs(chp_bk_title, fp);

printf("tAuthor: ");
scanf("%s", chp_bk_author);
fputs("nAuthor: ", fp);
fputs(chp_bk_author, fp);

printf("tPage: ");
scanf("%d", &i_temp);
chp_bk_page = int_to_alpha(i_temp);
fputs("nPage: ", fp);
fputs(chp_bk_page, fp);

printf("tPrice(only Integer): ");
scanf("%d", &i_temp);
chp_bk_price = int_to_alpha(i_temp);
fputs("nPrice: ", fp);
fputs(chp_bk_price, fp);

char* chp_item_separator = "n-----------------------------
---------------n";
fputs(chp_item_separator, fp);

fclose(fp);
return true;
}

bool disp_one_elem()
{



printf("nTo display the details of record as per your
choice.n");

struct bk_detail s_bk_detail;
s_bk_detail.chp_sname = malloc(sizeof(char) * STRING_LEN);
s_bk_detail.chp_stitle = malloc(sizeof(char) * STRING_LEN);
s_bk_detail.i_spage = 0;
s_bk_detail.i_sprice = 0;

char* chp_usr_book = malloc(sizeof(char) * STRING_LEN);
printf("Please Enter the title of the book: ");
scanf("%s", chp_usr_book);

FILE* fp;

char* chp_str = malloc(sizeof(char) * HEAD_SIZE);
char* chp_prev_str = malloc(sizeof(char) * HEAD_SIZE);
char ch_temp;
int i_ch_count = 0;
bool b_store = false;
bool b_assign = false;
while ((ch_temp = fgetc(fp))!= EOF)
{
if ((isalpha(ch_temp))||(isdigit(ch_temp))||(ch_temp
== '_'))
{
*(chp_str + i_ch_count) = ch_temp;
i_ch_count++;
}
else if ((ch_temp == ':')||(ch_temp == 'n'))
{
*(chp_str + i_ch_count) = '0';
i_ch_count = 0;

if (ch_temp == ':')
{
b_store = false;
}
else if (ch_temp == 'n')
b_store = true;

if (b_store)
{
if (strcmp(chp_str, chp_usr_book) == 0)
{
b_assign = true;



}

if (b_assign)
{
if (strcmp(chp_prev_str, "Title") == 0)
{
s_bk_detail.chp_stitle =
strcpy(s_bk_detail.chp_stitle, chp_str);
printf("nTitle - %s",
s_bk_detail.chp_stitle);
}
else if (strcmp(chp_prev_str, "Author")
== 0)
{
s_bk_detail.chp_sname =
strcpy(s_bk_detail.chp_sname, chp_str);
printf("nAuthor - %s",
s_bk_detail.chp_sname);
}
else if (strcmp(chp_prev_str, "Page") ==
0)
{
int i_temp = atoi(chp_str);
s_bk_detail.i_spage = i_temp;
printf("nPage - %d",
s_bk_detail.i_spage);
}
else if (strcmp(chp_prev_str, "Price") ==
0)
{
int i_temp = atoi(chp_str);
s_bk_detail.i_sprice = i_temp;
printf("nPrice - %d",
s_bk_detail.i_sprice);

b_assign = false;
}
}
}
else
{
chp_prev_str = strcpy(chp_prev_str,
chp_str);
}
}
}



fclose(fp);
return true;
}

bool disp_all_elem()
{
printf("nTo display the details of record.n");

FILE* fp;

char* chp_str = malloc(sizeof(char) * HEAD_SIZE);
char ch_temp;
int i_ch_count = 0;

while ((ch_temp = fgetc(fp))!= EOF)
{
if ((isalpha(ch_temp))||(isdigit(ch_temp))||(ch_temp
== ':')||(ch_temp == ' ')||(ch_temp == '_'))
{
*(chp_str + i_ch_count) = ch_temp;
i_ch_count++;
}
else if (ch_temp == 'n')
{
*(chp_str + i_ch_count) = '0';
i_ch_count = 0;

fputs(chp_str, stdout);
fputs("n", stdout);
}
}

fclose(fp);
return true;
}



13. WAP to display the sum of entered number by writing on & reading
from file.

Program:

#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>


void write_file(FILE* fp);
void read_file(FILE* fp);

int main()
{
printf("WAP to write integer numbers to files, then separate
even & odd numbers among them & store & display them in separate
files.");
printf("nnn");

FILE* fp;

printf("Please Note: nt->Comma(','), nt->Blank-Space ('
'), nt->Tab ('t') nt->and Enter ('n') are separators");
printf("nt->whereas Dot ('.') is terminator, nLimitation:
Program will not accept any number more than 9 digits.");
printf("nPlease use any of spearator before terminator.");

printf("nnn");
printf("Please Enter numbers: ");

write_file(fp);
printf("nnn");
read_file(fp);

system("pause");
return 0;
}

void write_file(FILE* fp)
{
fp = fopen("Integer_data.txt", "w+");

int* ip_usr_data;



ip_usr_data = malloc(sizeof(int));

char ch_temp_data;
char* ch_num = malloc(sizeof(char) * DIGIT_SIZE);
int i_count = 0;
bool b_check = false;
while ((ch_temp_data = getchar()) != '.')
{
if (((ch_temp_data == ',')||(ch_temp_data == '
')||(ch_temp_data == 't')||(ch_temp_data == 'n'))&&(b_check))
{
b_check = false;
*(ch_num + i_count) = '0';
i_count = 0;

*ip_usr_data = atoi(ch_num);
if (*ip_usr_data)
{
fputs(ch_num, fp);
fputs(", ", fp);
}
}
else if (isdigit(ch_temp_data))
{
b_check = true;
*(ch_num + i_count) = ch_temp_data;
i_count++;
}
else if (isalpha(ch_temp_data))
{
printf("Invalid input.");
}
}

fclose(fp);
}

void read_file(FILE* fp)
{
fp = fopen("Integer_data.txt", "r+");

FILE* fp_even;
fp_even = fopen("Even_data.txt", "w+");
FILE* fp_odd;
fp_odd = fopen("Odd_data.txt", "w+");

int* ip_usr_data;




int i_count = 0;
char ch_temp_data;
while ((ch_temp_data = fgetc(fp)) != EOF)
{
if (((ch_temp_data == ',')||(ch_temp_data == '
')||(ch_temp_data == 't')||(ch_temp_data == 'n'))&&(b_check))
{
b_check = false;
i_count = 0;

if (*ip_usr_data)
{
if ((*ip_usr_data % 2) == 0)
{
fputs(ch_num, fp_even);
fputs(", ", fp_even);
}
else
{
fputs(ch_num, fp_odd);
fputs(", ", fp_odd);
}

}
}
{
b_check = true;
i_count++;
}
}

if (fclose(fp_even) == 0)
if (fclose(fp_odd) == 0)
if (fclose(fp) == 0)
printf("Normal termination.n");
else
printf("Abnormal termination.n");
else



else

}



14. Write integer numbers to files, then separate even & odd numbers
among them & store & display them in separate files.

Program:

#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>


char* int_to_alpha(int i_num);
void write_file(FILE* fp, int i_addend, int i_augend);
void read_file(FILE* fp);

int main()
{
printf("WAP to display the sum of entered number by writing
on & reading from file.");
printf("nnn");

printf("Limitation: Program will only accept intergral
number of size 4 bytes.");

printf("nnn");

int i_addend, i_augend;
scanf("%d", &i_addend);

scanf("%d", &i_augend);

FILE* fp;
write_file(fp, i_addend, i_augend);
read_file(fp);

system("pause");
return 0;
}

char* int_to_alpha(int i_num)
{
int i_count, i_sign, i_rev_count;
char* chp_num = malloc(sizeof(char) * DIGIT_SIZE);
char* chp_rev_num = malloc(sizeof(char) * DIGIT_SIZE);



i_sign = 0;
i_count = i_rev_count = 0;
if (i_num == 0)
{
i_count++;
}
else if (i_num < 0)
{
i_sign = -1;
i_num *= -1;
}
while (i_num > 0)
{
*(chp_num + i_count) = i_num % 10 + '0';
i_count++;

i_num /= 10;
}
if (i_sign < 0)
{
*(chp_num + i_count) = '-';
i_count++;
}

i_count = 0;
i_rev_count = strlen(chp_num)-1;

while (*(chp_num + i_count) != '0')
{
*(chp_rev_num + i_count) = *(chp_num + i_rev_count);
i_count++;
i_rev_count--;
}

*(chp_rev_num + i_count) = '0';

return chp_rev_num;
}

void write_file(FILE* fp, int i_addend, int i_augend)
{
fp = fopen("Summation.txt", "w+");

char* chp_addend = int_to_alpha(i_addend);



char* chp_augend = int_to_alpha(i_augend);

fputs(chp_addend, fp);
fputs(" + ", fp);
fputs(chp_augend, fp);
fputs(" = ", fp);

fclose(fp);
}

void read_file(FILE* fp)
{
int i_addend, i_augend, i_result;
fp = fopen("Summation.txt", "r+");

int* ip_usr_data;

char* chp_result;
int i_count = 0;
int i_sign = 0;
bool b_flag = false;
char ch_temp_data;
while ((ch_temp_data = fgetc(fp)) != EOF)
{
if ((ch_temp_data == ' ')&&(b_check))
{
b_check = false;
i_count = 0;


if (i_sign < 0)
{
*ip_usr_data *= -1;
i_sign = 0;
}

if (*ip_usr_data)
{
if (b_flag)
{
i_augend = *ip_usr_data;
b_flag = false;



}
else if (!b_flag)
{
i_addend = *ip_usr_data;
}
}
}
{
b_check = true;
i_count++;
}
else if (ch_temp_data == '+')
{
b_flag = true;
}
else if (ch_temp_data == '-')
{
i_sign = -1;
}
else if (ch_temp_data == '=')
{
i_result = i_addend + i_augend;
printf("Addend: %dn", i_addend);
printf("Augend: %dn", i_augend);

chp_result = int_to_alpha(i_result);
printf("Summation-: %sn", chp_result);
}
}

fputs(chp_result, fp);
if (fclose(fp) == 0)
printf("Normal termination.n");
else

}



15. WAP to draw the given pattern as per user value.

*
**
***
****
*****

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t*n");
printf("t**n");
printf("t***n");
printf("t****n");
printf("t*****n");
printf("n");


printf("nnn");
}

void draw_pattern()
{
for(ui_row = 1; ui_row <= i_number; ++ui_row)
{
printf("nt");
printf("*");
}

printf("nnn");
}



int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}




1
12
123
1234
12345

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t1n");
printf("t12n");
printf("t123n");
printf("t1234n");
printf("t12345n");
printf("n");


printf("nnn");
}

void draw_pattern()
{
{
printf("nt");
printf("%d", ui_col);
}
}

int main()
{
set_argument();



draw_pattern();

printf("nnn");
system("pause");
return 0;
}




1
21
321
4321
54321

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t 1n");
printf("t 21n");
printf("t 321n");
printf("t 4321n");
printf("t54321n");
printf("n");

printf("Please Enter a single digit number to draw pattern:
");

printf("nnn");
}

void draw_pattern()
{
unsigned int ui_row, ui_col, ui_count;
{
printf("nt");
unsigned int ui_blank_count = (i_number - ui_row);
for(ui_col = 1; ui_col <= ui_blank_count; ++ui_col)
printf(" ");

unsigned int ui_num_count = (i_number - ui_blank_count);
for(ui_count = ui_num_count; ui_count >= 1; --ui_count)
printf("%d", ui_count);



}
}

int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}



18.WAP to draw the given pattern as per user value.

5
54
543
5432
54321

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t5n");
printf("t54n");
printf("t543n");
printf("t5432n");
printf("t54321n");
printf("n");


printf("nnn");
}

void draw_pattern()
{

{
printf("nt");
int i_count = i_number;
for(ui_col = 1; ui_col <= ui_row; ++ui_col, --i_count)
printf("%d", i_count);
}
}



int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}




5
45
345
2345
12345

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t 5n");
printf("t 45n");
printf("t 345n");
printf("t 2345n");
printf("t12345n");
printf("n");

");

printf("nnn");
}

void draw_pattern()
{
unsigned int ui_row, ui_col, ui_count;
{
printf("nt");
for(ui_col = 1; ui_col <= ui_blank_count; ++ui_col)
printf(" ");

int i_count = ui_blank_count;
for(ui_count = 1; ui_count <= ui_row; ++ui_count,
++i_count)



printf("%d", (i_count+1));
}
}

int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}




54321
5432
543
54
5

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t54321n");
printf("t5432n");
printf("t543n");
printf("t54n");
printf("t5n");
printf("n");

");

printf("nnn");
}

void draw_pattern()
{
{
printf("nt");
for(ui_col = i_number; ui_col >= ui_row; --ui_col)
printf("%d", ui_col);
}
}



int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}




5
545
54345
5432345
543212345

Program:

#include <stdio.h>

int i_number;

void set_argument()
{
value.***nnn");

printf("n");
printf("t 5n");
printf("t 545n");
printf("t 54345n");
printf("t 5432345n");
printf("t543212345n");
printf("n");


printf("nnn");
}

void draw_pattern()
{
unsigned int ui_row, ui_col, ui_blank;
{
printf("nt");
for(ui_blank = 1; ui_blank <= ui_blank_count;
++ui_blank)
printf(" ");

bool b_flag_f = true;
bool b_flag_b = true;



for(ui_col = (2*ui_row + 1); ui_col >= 1; --ui_col)
{
if (((ui_col%2)==0)&&(b_flag_f))
{
int i_count = i_number;
for(ui_count = 1; ui_count <= (ui_col/2);
++ui_count, --i_count)

b_flag_f = false;
}
else if(((ui_col%2)==0)&&(!b_flag_f)&&(b_flag_b))
{
int i_count = i_number - (ui_col/2) +1;
for (ui_count = (ui_col/2); ui_count >= 1; --
ui_count, ++i_count)

b_flag_b = false;
}
}
}
}

int main()
{
set_argument();
draw_pattern();

printf("nnn");
system("pause");
return 0;
}



22. WAP to pass array element one by one using pointer and
function.

Program:

#include <stdio.h>

#define SIZE_ARRAY 3

void print_item(int* item);

int main()
{
printf("WAP to pass array element one by one using pointer
and function.n");
printf("nnn");

int storage[SIZE_ARRAY][SIZE_ARRAY];

printf("Given order of array is %d * %dn", SIZE_ARRAY,
SIZE_ARRAY);

int i_loop_count, j_loop_count;
for (i_loop_count = 0; i_loop_count < SIZE_ARRAY;
++i_loop_count)
for (j_loop_count = 0; j_loop_count < SIZE_ARRAY;
++j_loop_count)
{
printf("Enter item for array[%d][%d]:
",i_loop_count, j_loop_count);
scanf("%d", &storage[i_loop_count][j_loop_count]);
}

printf("nnn");
printf("Output as Array-element:n");
for (i_loop_count = 0; i_loop_count < SIZE_ARRAY;
++i_loop_count)
for (j_loop_count = 0; j_loop_count < SIZE_ARRAY;
++j_loop_count)
print_item(&storage[i_loop_count][j_loop_count]);

printf("nnn");
system("pause");
return 0;
}



void print_item(int* i_item)
{
static int i_count = 1;

printf("%d ", *i_item);

if ((i_count%3)==0)
printf("n");

i_count++;
}



23. WAP to find (+)ive, (-)ive, even, odd, prime element from array.

Program:

#include <stdio.h>


void print_pos_item(int** item, int i_row, int i_col);
void print_neg_item(int** item, int i_row, int i_col);
void print_evn_item(int** item, int i_row, int i_col);
void print_odd_item(int** item, int i_row, int i_col);
void print_prime_item(int** item, int i_row, int i_col);

int main()
{
printf("WAP to find (+)ive, (-)ive, even, odd, prime element
from array.n");
printf("nnn");

int i_row, i_col;

printf("Please enter the Order of Mtrix.");
printf("nEnter number of Rows: ");
scanf("%d", &i_row);
printf("nEnter number of Columns: ");
scanf("%d", &i_col);

int** ip_storage = malloc(sizeof(int) * i_row * i_col);

int i_count;
for (i_count = 0; i_count < i_row; ++i_count)
*(ip_storage + i_count) = malloc(sizeof(int) * i_col);

printf("Please enter %d items for corresponding rows and
columns of storage: nn", (i_row * i_col));

for (i_loop_count = 0; i_loop_count < i_row; ++i_loop_count)
for (j_loop_count = 0; j_loop_count < i_col;
++j_loop_count)
{
scanf("%d", &(*(*(ip_storage + i_loop_count) +
j_loop_count)));



}

printf("nnn");
print_pos_item(ip_storage, i_row, i_col);

printf("nnn");
print_neg_item(ip_storage, i_row, i_col);

printf("nnn");
print_evn_item(ip_storage, i_row, i_col);

printf("nnn");
print_odd_item(ip_storage, i_row, i_col);

printf("nnn");
print_prime_item(ip_storage, i_row, i_col);

printf("nnn");
system("pause");
return 0;
}

void print_pos_item(int** ip_storage, int i_row, int i_col)
{

printf("List of (+)ive items:n");

for (i_loop_count = 0; i_loop_count < i_row;
++i_loop_count)
for (j_loop_count = 0; j_loop_count < i_row;
++j_loop_count)
{
if ((*(*(ip_storage + i_loop_count) + j_loop_count)
>= 0))
printf("%d, ", *(*(ip_storage + i_loop_count) +
j_loop_count));
}
}

void print_neg_item(int** ip_storage, int i_row, int i_col)
{

printf("List of (-)ive items:n");



++i_loop_count)
++j_loop_count)
{
if ((*(*(ip_storage + i_loop_count) + j_loop_count)
< 0))
j_loop_count));
}
}

void print_evn_item(int** ip_storage, int i_row, int i_col)
{

printf("List of even items:n");

++i_loop_count)
++j_loop_count)
{
if (((*(*(ip_storage + i_loop_count) +
j_loop_count)%2) == 0))
j_loop_count));
}
}

void print_odd_item(int** ip_storage, int i_row, int i_col)
{

printf("List of odd items:n");

++i_loop_count)
++j_loop_count)
{
if ((*(*(ip_storage + i_loop_count) +
j_loop_count)%2) != 0)
j_loop_count));
}
}



void print_prime_item(int** ip_storage, int i_row, int i_col)
{
bool b_check;

printf("List of prime items:n");

++i_loop_count)
++j_loop_count)
{
int i_count;
for(i_count = 2; i_count <= (i_count/2);
++i_count)
{
if((*(*(ip_storage + i_loop_count) +
j_loop_count) % i_count) == 0)
{
b_check = true;
break;
}
else
b_check = false;
}
if(!b_check)
{
printf("%d, ", *(*(ip_storage +
i_loop_count) + j_loop_count));
}
}
}



24. WAP to display array element in row-major and column-mjor
technique.

Program:

#include <stdio.h>

void row_major_tech(int** item, int i_row, int i_col);
void col_major_tech(int** item, int i_row, int i_col);

int main()
{
printf("WAP to display array element in row-major and
column-mjor technique.n");
printf("nnn");

int i_row, i_col;



int i_count;


++j_loop_count)
{
j_loop_count)));
}

printf("nnn");
row_major_tech(ip_storage, i_row, i_col);



printf("nnn");
col_major_tech(ip_storage, i_row, i_col);

printf("nnn");
system("pause");
return 0;
}

void row_major_tech(int** ip_storage, int i_row, int i_col)
{

printf("List of items as Row-Major technique:n");

++i_loop_count)
{
printf("n");
++j_loop_count)
{
printf("%d ", *(*(ip_storage + i_loop_count) +
j_loop_count));
}
}
}

void col_major_tech(int** ip_storage, int i_row, int i_col)
{

printf("List of items as Column-Major technique:n");

++j_loop_count)
{
printf("n");
++i_loop_count)
{
j_loop_count));
}
}
}



25. WAP to transpose a given matrix using pointer and function.

Program:

#include <stdio.h>


void print_trans_matrix(int** item, int i_row, int i_col);

int main()
{
printf("WAP to transpose a given using pointer and
function.n");
printf("nnn");

int i_row, i_col;



int i_count;


++j_loop_count)
{
j_loop_count)));
}

printf("nnn");



print_trans_matrix(ip_storage, i_row, i_col);

printf("nnn");
system("pause");
return 0;
}

void print_trans_matrix(int** ip_storage, int i_row, int i_col)
{
int** trans_mat = malloc(sizeof(int) * i_row * i_col);

int i_count;
*(trans_mat + i_count) = malloc(sizeof(int) * i_col);

printf("nMatrix You entered:");
++i_loop_count)
{
printf("n");
++j_loop_count)
{
j_loop_count));
}
}

printf("nMatrix after Transpose:");

++j_loop_count)
{
printf("n");
++i_loop_count)
{
*(*(trans_mat + j_loop_count) + i_loop_count) =
*(*(ip_storage + i_loop_count) + j_loop_count);
printf("%d ", *(*(trans_mat + j_loop_count) +
i_loop_count));
}
}
}



26. WAP to display the mathematical table of given number.

Program:

#include <stdio.h>

void disp_mult_table_range(int i_lr, int i_hr);

int main()
{
printf("WAP to display the mathematical table of given range
of numbers.n");
printf("nnn");

int i_lr, i_hr;
printf("Please Enter lower limit: ");
scanf("%d", &i_lr);
printf("Please Enter higher limit: ");
scanf("%d", &i_hr);

disp_mult_table_range(i_lr, i_hr);

printf("nnn");
system("pause");
return 0;
}

void disp_mult_table_range(int i_lr, int i_hr)
{
int i_multiplicand, i_multiplier;

for (i_multiplier = i_lr; i_multiplier <= i_hr;
++i_multiplier)
{
printf("nnn");
printf("Multiplication Table of %d:n", i_multiplier);
for (i_multiplicand = 1; i_multiplicand <= 10;
++i_multiplicand)
{
printf("t%d * %d = %dn", i_multiplier,
i_multiplicand, (i_multiplier * i_multiplicand));
}
}
}



27. WAP to display the mathematical table of given number.

Program:

#include <stdio.h>

void disp_mult_table(int i_num);

int main()
{
printf("WAP to display the mathematical table of given
number.n");
printf("nnn");

int i_num;
printf("Please Enter number: ");
scanf("%d", &i_num);

disp_mult_table(i_num);

printf("nnn");
system("pause");
return 0;
}

void disp_mult_table(int i_num)
{
int i_multiplicand;
for (i_multiplicand = 1; i_multiplicand <= 10;
++i_multiplicand)
{
printf("t%d * %d = %dn", i_num, i_multiplicand,
(i_num * i_multiplicand));
}
}



28. WAP to display alphabets „a‟ to „z‟ and “A” to “Z”
a. Using pointers.
b. Without using pointers.

Program:

a. Using pointers.

#include <stdio.h>

void disp_lower_case_alphabets_wp(void);
void disp_upper_case_alphabets_wp(void);

int main()
{
printf("WAP to display a to z and A to Z by using
pointer.n");
printf("nnn");

disp_lower_case_alphabets_wp();
printf("nnn");
disp_upper_case_alphabets_wp();

printf("nnn");
system("pause");
return 0;
}

void disp_lower_case_alphabets_wp(void)
{
printf("Displaying lower - case alphabets:-n");
char* chp_var = "a";
unsigned int ui_loop_count;
for (ui_loop_count = 0; ui_loop_count < 26; ++ui_loop_count)
{
if (ui_loop_count%10 == 0)
printf("n");
printf("%ct", *chp_var + ui_loop_count);
}
}



void disp_upper_case_alphabets_wp(void)
{
char* chp_var = "A";
for (ui_loop_count = 0; ui_loop_count < 26;
++ui_loop_count)
{
printf("n");
printf("%ct", *chp_var + ui_loop_count);
}
}

~~~~~~~~~~~~~~~~~~~~~************~~~~~~~~~~~~~~~~~~~~~

a. Without using pointers.

#include <stdio.h>

void disp_lower_case_alphabets(void);
void disp_upper_case_alphabets(void);

int main()
{
printf("WAP to display a to z and A to Z by using
pointer.n");
printf("nnn");

disp_lower_case_alphabets();
printf("nnn");
disp_upper_case_alphabets();

printf("nnn");
system("pause");
return 0;
}

void disp_lower_case_alphabets(void)
{
char chp_var = 'a';
for (ui_loop_count = 0; ui_loop_count < 26; ++ui_loop_count)



{
printf("n");
printf("%ct", chp_var + ui_loop_count);
}
}

void disp_upper_case_alphabets(void)
{
char chp_var = 'A';
for (ui_loop_count = 0; ui_loop_count < 26;
++ui_loop_count)
{
printf("n");
printf("%ct", chp_var + ui_loop_count);
}
}



29. WAP to take character sequence (string) and diplay it, using
pointer and functions.

Program:

#include <stdio.h>

#define MAX_SEQL_SIZE 1024

char* get_char_seql(void);
void disp_char_seql(char*);

int main()
{
printf("WAP to take character sequence (string) and diplay
it, using pointer and functions.n");
printf("nnn");

printf("Please press 'dot'(.) as terminating character.");
printf("nnn");

char* chp_seql;
chp_seql = get_char_seql();
printf("nnn");
disp_char_seql(chp_seql);

printf("nnn");
system("pause");
return 0;
}

char* get_char_seql(void)
{
printf("Enter your character sequel:- ");
char* chp_var = (char*)malloc(sizeof(char) * MAX_SEQL_SIZE);

char ch_temp;
while((ch_temp = getchar()) != '.')
{
*(chp_var + ui_count) = ch_temp;
ui_count++;
}
*(chp_var + ui_count) = '0';



return chp_var;
}

void disp_char_seql(char* chp_seql)
{
printf("Character sequel you entered:- %s", chp_seql);
}



Note:
 For Visual Studio 2008 and Qt (version- 4.2) you need to format the code as, make
all the initialization throughout the function to very initial steps after opening
braces.


Lab. Programs in C

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