The document contains source code for multiple C programming assignments. The code includes programs to: 1) Convert a string to uppercase/lowercase, count characters, vowels, consonants, and spaces. 2) Perform binary search on an array. 3) Multiply two matrices. 4) Sort an array in ascending and descending order. 5) Calculate power of a number using recursion. 6) Print tables for multiplication from 1 to 10.

1. D e p a r t m e n t o f M e t a l l u r g i c a l E n g i n e e r i n g
N E D U n i v e r s i t y
Computer Programming
Syed Muhammad Tanveer
IM-207

2. 1

3. 2
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a;
char ch[80];
printf("Enter a string: ");
gets(ch);
printf("n");
int b=strlen(ch);
for(a=0;a<b;a++)
{
if (ch[a]>64&&ch[a]<91)
ch[a]=ch[a]+32;
else
if (ch[a]>96&&ch[a]<123)
ch[a]=ch[a]-32;
}
puts(ch);
printf("nTotal words =%dn",b);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
clrscr();
printf("enter a number: ");
scanf("%d",&a);
if (a%2==0)
printf(" number is evenn ");
else
printf("number is oddn");
for (b=1;b<=10;b++)
printf("%d x %d = %dn",a,b,a*b);
getch();
}
/* Assigment # 3 */
#include<stdio.h>
#include<conio.h>
void main(void)
{ int a,b;
char ch= 'e'||'o';
clrscr();
printf("enter a number : ");
scanf("%c",&ch);
for(a=1;a<=10;a++)
{
if (ch=='e')
for(b=1;b<=10;b++)
{
if (a%2==0)
printf("%d x %d = %dn",a,b,a*b);
}
else if (ch=='o')
for (b=1;b<=10;b++)
{
if (a%2==1)
printf("%d x %d = %dn",a,b,a*b);
}
}
/* Assignment # 3 */
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
char ch;
clrscr();
printf("Press e or o : ");
scanf("%c",&ch);
switch (ch)
{
case 'e':
for(a=1;a<=10;a++)
{
if (a%2==0)
for (b=1;b<=10;b++)
printf("t%d x %d =
%dn",a,b,a*b);
}
break;
case 'o':
for(a=1;a<=10;a++)
{

4. 3
getche();
}
if (a%2!=0)
for (b=1;b<=10;b++)
printf("t%d x %d = %dn",a,b,a*b);
}
break;
default:
printf("Error...nPlease pressn e tables of
even numbersnORn o for tables of odd
numbers ");
break;
}
getche();
}
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
void main(void)
{
int a,b;
clrscr();
for(a=1,b=1;a=5,b<=10;a++,b++)
{
textcolor(1);
textbackground(4);
cprintf("%d x %d = %d",a,b,a*b);
printf("n");
}
gotoxy(30,10);
printf(“I m Here “);
getche();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a;
char ch[80];
printf("Enter a string: ");
gets(ch);
printf("n");
int
slen=strlen(ch);
for(a=0;a<slen;a++)
{
if
(ch[a]=='e'||ch[a]=='a'||ch[a]=='o'||ch[a]=='u'||
ch[a]=='i')
printf("%c",ch[a]-32);
else
printf("%c",ch[a]);
}
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int i,j,slen,temp;
char A[]="muprteco";
slen=strlen(A);
printf("Enter element in arrayn");
for(i=0;i<slen;i++)
{
printf("Alphabet %d = %c",i+1,A[i]);
printf("n");
}
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int a[100],n,i,beg,end,mid,item;
printf("n------- BINARY SEARCH -------
nn");
printf("Enter No. of Elements= ");
scanf("%d",&n);
printf("nEnter Elements in Sorted
Order=n");
for(i=1;i<=n;i++)
scanf("%d",&a[i]);
printf("nEnter Item you want to

5. 4
printf("n Element enter by you is : n");
for(i=0;i<slen;i++)
printf("%cn",A[i]);
for(i=0;i<slen;i++)
{
for(j=i+1;j<slen;j++)
if (A[i]<A[j])
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
printf("%ct",A[i]);
}
getch();
}
Search= ");
scanf("%d",&item);
beg=1;
end=n;
mid=(beg+end)/2;
while(beg<=end && a[mid]!=item)
{
if(a[mid]<item)
beg=mid+1;
else
end=mid-1;
mid=(beg+end)/2;
}
if(a[mid]==item)
printf("nData is Found at Location : %d",--
mid);
else
printf("Data is Not Found");
getch();
}
#include<stdio.h>
#include<conio.h>
main(){
const int a=2, b=0;
int c=0;
clrscr();
printf("Value of a = %d",a*4);
c = a*4;
printf("Value of a = %d",c);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int a=2;
const int b=2;
printf("%d * %d = %d",a,b,a*b);
/*b++; b is constant , b++ error */
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<ctype.h>
void main(void)
{
clrscr();
int a,count=0,cons=0,space=0;
char ch[80];
printf("Enter a string: ");
gets(ch);
int b=strlen(ch);
for(a=0;a<b;a++)
{
if (isspace(ch[a]))
space++;
else if (ch[a]=='e' || ch[a]=='a'|| ch[a]=='o'|| ch[a]=='u'
|| ch[a]=='i')
/* IMPORTANT FUNCTION QUESTION */
#include<stdio.h>
#include<conio.h>
int input(void);
void main()
{ clrscr();
int num=input();
printf("nReturned Value
=%d",num);
getch(); }
int input (void)
{
int a,b;
printf("enter first number : ");
scanf("%d",&a);
printf("enter second number : ");
scanf("%d",&b);
float c=(float) a/b;

6. 5
count++;
else if (ch[a]!=' ')
cons++;
}
printf("Total
Character=%dtVowels=%dtConsonant=%dtSpace=%d",
b-space,count,cons,space);
getch();
}
printf("ntt%d divided by %d= %.3f",a,b,c);
return (a-b);
}
/* Post-fix & Pre-fix Decreament */
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
printf("ttPost-fix & Pre-fix
Decreamentn");
int
x=10,y=20,z=30,a=40,b=50,c=60,e=80,d=70,f=90;
printf("t%d and %dn",x,x);
printf("t%d and %dn",y,y--);
printf("t%d and %dn",z,--z);
printf("t%d and %dn",a--,a);
printf("t%d and %dn",b--,b--);
printf("t%d and %dn",c--,--c);
printf("t%d and %dn",--d,d);
printf("t%d and %dn",--e,e--);
printf("t%d and %dn",--f,--f);
getch();
}
/* Post-fix & Pre-fix Increament */
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
printf("ttPost-fix & Pre-fix
Increamentn");
int
x=10,y=20,z=30,a=40,b=50,c=60,e=80,d=70,f=90
;
printf("t%d and %dn",x,x);
printf("t%d and %dn",y,y++);
printf("t%d and %dn",z,++z);
printf("t%d and %dn",a++,a);
printf("t%d and
%dn",b++,b++);
printf("t%d and
%dn",c++,++c);
printf("t%d and %dn",++d,d);
printf("t%d and
%dn",++e,e++);
printf("t%d and %dn",++f,++f);
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
main()
{
int a[10][10];
int b[10][10];
int i,j,k,c[10][10],r1,c1,r2,c2,sum=0;
clrscr();
printf("ttMultiplication of Two Matricesn");
/*FOR MATRICS A */
printf("nMatrics A");
printf("nEnter No of Row :");
scanf("%d",&r1);
printf("nEnter No of Column :");
scanf("%d",&c1);
for(i=0;i<r1;i++)
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
char ch;
int i,j,n,temp;
int A[10];
printf("Enter the no of element:");
scanf("%d",&n);
printf("Enter element in arrayn");
for(i=0;i<n;i++)
{
printf("Element %d is ",i+1);
scanf("%d",&A[i]);
}
printf("n Element enter by you is :

7. 6
for( j=0;j<c1;j++)
{
printf("nEnter A[%d][%d] : ",i,j);
scanf("%d",&a[i][j]);
}
for(i=0;i<r1;i++)
{
printf("n");
for(j=0;j<c1;j++)
printf("%dt",a[i][j]);
}
printf("n");
/*FOR MATRICS B */
printf("nMatrics B");
printf("nEnter No of Row :");
scanf("%d",&r2);
printf("nEnter No of Column :");
scanf("%d",&c2);
for(i=0;i<r2;i++)
for( j=0;j<c2;j++)
{
printf("nEnter b[%d][%d] : ",i,j);
scanf("%d",&b[i][j]);
}
for(i=0;i<r2;i++)
{
printf("n");
for( j=0;j<c2;j++)
printf("%dt",b[i][j]);
}
getch(); }
printf("nPress Enter... ");
clrscr();
if (r1==c2)
{ /*FOR MATRICS C */
printf("nMatrics c=a*bn");
for(i=0;i<r1;i++)
for(j=0;j<c2;j++)
{
sum=0;
for (k=0;k<c2;k++)
sum=sum+a[i][k]*b[k][j];
c[i][j]=sum;
}
for(i=0;i<r1;i++)
{
for( j=0;j<c2;j++)
printf("%dt",c[i][j]);
printf("n");
}
}
else
printf("nCould Not Multiply because Row of b != Column
of b ");
n");
for(i=0;i<n;i++)
{
printf("%dn",A[i]);
}
printf("If you want to sort in ascending
ordertpress a
tttOrnIf you want to sort in
descending ordertpress bnt");
ch=getche();
if (ch=='a')
{
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{
if (A[i]>A[j])
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
}
printf("t%dt",A[i]);
}
}
else
if (ch=='b')
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{ if (A[i]<A[j])
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
}
printf("t%dt",A[i]);
}
getche();
}

8. 7
getch();
}
#include<stdio.h>
#include<conio.h>
void power(int a,int b);
void main()
{ clrscr();
int a,b;
printf("Enter a number ");
scanf("%d",&a);
printf("%d ki power ",a);
scanf("%d",&b);
power(a,b);
getch(); }
void power(int a, int b)
{ long int e,c;
e=a;
for (int s=1;s<b;s++) e=e*a;
printf("t=%ld",e);
int i,n;
printf("nSquare of ");
for (i=1;i<=a;i++)
c=a*a;
printf("%d is %ld",a,c);
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
char c;
do
{
clrscr();
printf("enter a number: ");
scanf("%d",&a);
for (;a<=b;a++)
{ if (a%2==0)
for (b=1;b<=10;b++)
printf("%d x %d = %dn",a,b,a*b);
}
c= getche();
}
while (c=='f' || c =='F');
getch();
}

9. 8
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a,b;
char str[50];
printf("Enter a string:t");
gets(str);
strrev(str);
printf("%s",str);
a=strlen(str);
b=a;
printf("Reverse string:t");
while (b>=0)
{
printf("%c",str[b]);
b--;
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
clrscr();
for(b=1;b<=10;b++)
{
for(a=1;a<=10;a++)
printf("t%d",b*a);
printf("n");
}
getche();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int num =20;
clrscr();
/*((num%2==0)? 1:0); */
((num%2==1)?printf("nEven"):printf("nOdd"));
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
char c =65;
clrscr();
printf("character =%c, Its code= %d",c,c);
printf("nTanveer "Raza"");
getch();
}
#include<stdio.h>
#include<conio.h>
//#include<string.h>
//void printmsg(void);
void printmsg(void)
{
printf("NED University of Engg. & Tech.");
printf("n Department of Metallurgical engg.");
#include<stdio.h>
#include<conio.h>
main()
{
int num[2][2];
int i,j;
clrscr();
for(i=0;i<2;i++)
for(j=0; j<2; j++)
{

10. 9
}
main(){
clrscr();
printmsg();
getch();
}
printf("enter number :");
scanf("%d",&num[i][j]);
}
clrscr();
for(i=0;i<2;i++)
{
for(j=0;j<2; j++)
printf(" %dt",num[i][j]);
printf("n");
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int a=21,e=0,o=0;
while(a<=50)
{
if (a%2==0)
e=e+a;
else
o=o+a;
a++;
}
printf("Sum of Odd Numbers from 21-50=t%d",o);
printf("nSum of Even Numbers from 21-
50=t%d",e);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int c=0;
char ch;
while((ch=gethe())!=’r’)
{
c++;
if (ch==’a’)
a++;
else if (ch==’e’)
e++;
else if (ch==’u’)
u++;
else if (ch==’o’)
o++;
else if (ch==’i’)
i++;
}
printf(“nCharacter=%dnAs=%dnEs=%dnIs=%dnOs=
%d
nUs=%d”,c,a,e,i,o,u);
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
main(){
char str[20];
int len;
clrscr();
printf("Enter a string :");
scanf("%[^n]s",str);
len = strlen(str);
#include<stdio.h>
#include<conio.h>
main(){
clrscr();
char name[30]; //="Metallurgy";
int i=0;
while(name[i]!='o')
{
//gotoxy(30,10);
printf("%c",name[i]);

11. 10
printf("nLength of string = %d",len);
getch();
}
i++;
}
//scanf("%s",name);
//gets(name);
//puts(name);
//printf("%s",name);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
char c;
//int a,b;
do {
clrscr();
scanf("%d%d",&a,&b);
//while (a>1,b<=10)
//for(;a<=100;a++)
//for (b=25;a<=25,b>=1;a++,b--)
{
printf("%d + %d = %dn",a,b,a+b);
a--,b++;
//printf("%d",a);
//printf("%d %dn",a,b);
getche();
}
/*printf("Engr. Syed Muhammad Tanveern");*/
//printf("tProud to be a "Pakistani"");
} while (c=='f');
getche();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
main()
{
clrscr();
int i,j,A[2][2];
int max_num;
for(i=0;i<2;i++)
for( j=0;j<2;j++)
{
printf("nEnter A[%d][%d] : ",i,j);
scanf("%d",&A[i][j]);
}
for(i=0;i<2;i++)
{
printf("n");
for(j=0;j<2;j++)
printf("%dt",A[i][j]);
}
max_num=A[0][0];
for (i=0;i<2;i++)
for( j=0;j<2;j++)
{
printf("%dt",A[i][j]);
if (A[i][j]>=max_num)
max_num=A[i][j];
}
printf("nMaximun number = %d",max_num);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
char ch[60]="Mike";
sizeof(ch);
printf("nsize of ch = %d",sizeof (ch));
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int max_num,a,count=0;
int arr[10]={10,20,30,30,30,40,50,40,50,50};
max_num=arr[0];
for (a=0;a<10;a++)
{ printf("%dt",arr[a]);
if (arr[a]>=max_num)

12. 11
max_num=arr[a];
count++;
}
printf("Maximun number = %d times=%d",max_num,--
count);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
int a,b;
clrscr();
for (a=1;a<=7;a++)
{
for (b=1;b<=a;b++)
if (b%2==1 && a%2==1)
printf("%dt",b);
printf("n");
}
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a,b;
char str[50];
printf("Enter a string....");
gets(str);
printf("n");
a=strlen(str);
for (b=a;b>=0;b--)
printf("%c",str[b]);
getch();
}

13. 12
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a,b;
char ch[80],c='w';
printf("Enter a string: ");
gets(ch);
b=strlen(ch);
for(a=0;a<b;a++)
{
if (ch[a]==c)
printf("%c",'e');
else
printf("%c",ch[a]);
}
printf("nTotal words =%dn",b);
getch();
}
#include<stdio.h>
#include<conio.h>
void main (void)
{
clrscr();
int a=4,*b;
b=&a;
printf("Value of a=%d and its address=%un",a,&a);
printf("Value of b=%d and its address=%un",*b,b);
printf("value of a=%d and b=%d",a,*b);
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
int a,b;
char ch[80];
printf("Enter a string: ");
gets(ch);
printf("nCharcter ASCII Equivalentn ");
b=strlen(ch);
for(a=0;a<b;a++)
{
printf("%c t %d",ch[a],ch[a]);
printf("n");
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int a,count=0;
printf("Enter a number : ");
scanf("%d",&a);
for (int i=1;i<=a;i++)
{
if (a%i==0)
count++;
}
if (count==2)
printf("Number is Prime");
else
printf("Not a Prime Number");
getch();
}
/* SWAP THE VALUES BETWEEN 2INTEGER
#include<stdio.h>

14. 13
VARIABLES */
#include<stdio.h>
#include<conio.h>
void readint (int *a,int *b);
void swap (int *a,int *b);
int main(void)
{ clrscr();
int num1,num2;
readint(&num1,&num2);
printf("Before swapping num1=%d and
num2=%d n",num1,num2);
swap(&num1,&num2);
printf("After Swapping num1=%d and
num2=%dn",num1,num2);
getch();
return 0;
}
void readint(int *a,int *b)
{
printf("Enter first Integer number :");
scanf("%d",a);
printf("Enter second integer number :");
scanf("%d",b);
}
void swap(int *a,int *b)
{
int temp;
temp=*a;
*a=*b;
*b=temp;
}
#include<conio.h>
#include<stdlib.h>
void main(void)
{
clrscr();
int a=15;
printf(“a=%d and it equivalent octal =%o”,a,a);
printf(“a=%d and it equivalent hexa =%x”,a,a);
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{ clrscr();
int a,b;
float per=0;
printf("tttThis Program Calculate Percentage &
Graden");
printf("Enter Obtained Marks:");
scanf("%d",&a);
printf("Enter Total Marks:");
scanf("%d",&b);
per=((float)a/b)*100;
printf("Percentage=%.2f%n",per);
if (per>60 && per<70)
printf("Grade B");
else if (per>70 && per<80)
printf("Grade A");
else if (per>80 && per<=100)
printf("Grade A-one");
else if (per>50 && per<60)
printf("Pass");
else
printf("Fail");
/* swaps the values between 2 integer variables */
#include <stdio.h>
#include<conio.h>
void swap (int a, int b);
main (void ) {
int num1=40,num2=50;
clrscr();
printf("before swapping num1= %d,
num2=%dn",num1,num2);
swap(num1,num2);
getch();
}
void swap (int a, int b) {
int temp;
temp=a;
a=b;
b=temp;
printf("nAfter swapping num1= %d,
num2=%dn",a,b);
return;
}

15. 14
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int i,j,temp,A[10]={78,45,9,11,12,2,100,4,6,5};
printf("Elemnts of Array In Asecending Ordern");
for(i=0;i<10;i++)
{
for(j=i+1;j<10;j++)
if (A[i]>A[j])
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
printf("%dt",A[i]);
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int a=1;b=0;
while(a<=10)
{
b=b+a;
printf(“Sum of Number =%d n”,b);
a++;
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int r,c,i,j,A[10][10],B[10][10],C[10][10];
printf("Enter number of row:");
scanf("%d",&r);
printf("Enter number of Columns:");
scanf("%d",&c);
printf("Matrix An");
for (i=0;i<r;i++)
for (j=0;j<c;j++)
{
printf("Enter Element of A[%d][%d]=:",i,j);
scanf("%d",&A[i][j]);
}
for (i=0;i<r;i++)
{ for (j=0;j<c;j++)
printf("%dt",A[i][j]);
printf("n");
}
printf("Matrix Bn");
for (i=0;i<r;i++)
for (j=0;j<c;j++)
{
printf("Enter Element of B[%d][%d]=:",i,j);
scanf("%d",&B[i][j]);
}
for (i=0;i<r;i++)
{ for (j=0;j<c;j++)
#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int a=1;b=1;
for (a=1;a<=10;a++)
{
for (b=1;b<=10;b++)
printf(“%d t”,a*b);
printf(“n”);
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main()
{
int a;
clrscr();
for (a=0;a<11;a++)
{
if (a==4 || a==7)
continue;
printf(“Value of a is %dn”,a);
}

16. 15
printf("%dt",B[i][j]);
printf("n");
}
printf("Matrix C=A+Bn");
for (i=0;i<r;i++)
{ for (j=0;j<c;j++)
printf("%dt",A[i][j]+B[i][j]);
printf("n");
} getch();
}
for (a=0; ;a++)
{
printf(“Value of a is %dn”,a);
if (a>5)
break;
}
getch();
}
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main (void)
{
clrscr();
char wwe;
char ch;
int i,j,n,temp;
int A[10];
int x,y,slen,pemt;
printf("For number's sorting press s nFor alphabetic sorting press pnYour Choicet");
scanf("%c",&wwe);
switch (wwe)
{
case 's':
printf("ttSortingn");
printf("Enter the no of element:");
scanf("%d",&n);
printf("Enter element in arrayn");
for(i=0;i<n;i++)
{
printf("Element %d is ",i+1);
scanf("%d",&A[i]);
}
printf("n Element enter by you is : n");
for(i=0;i<n;i++)
{
printf("%dn",A[i]);
}
printf("If you want to sort in ascending ordertpress anOrnIf you want to sort in
descendingordertpress bnt");
printf("n");
ch=getch();
if (ch=='a')
{
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{
if (A[i]>A[j])

17. 16
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
}
printf("t%dt",A[i]);
}
}
else
if (ch=='b')
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{ if (A[i]<A[j])
{
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
}
printf("t%dt",A[i]);
}
break;
case 'p':
clrscr();
char Z[100];
printf("Enter a string:");
fflush(stdin);
gets(Z);
slen=strlen(Z);
printf("Enter element in arrayn");
for(x=0;x<slen;x++)
{
printf("Alphabet %d = %c",x+1,Z[x]);
printf("n");
}
printf("n Element enter by you is : n");
for(x=0;x<slen;x++)
{
printf("%cn",Z[x]);
}
printf("If you want to sort in ascending ordertpress a
nOrnIf you want to sort in descendingordertpress bnt");
printf("n");
ch=getch();
if (ch=='a')
{ for(x=0;x<slen;x++)
{
for(y=x+1;y<slen;y++)
if (Z[x]>Z[y])
{
pemt=Z[x];

18. 17
Z[x]=Z[y];
Z[y]=pemt;
}
printf("t%ct",Z[x]);
}
}
else
if (ch=='b')
{
for(x=0;x<slen;x++)
{
for(y=x+1;y<slen;y++)
{
if (Z[x]<Z[y])
{
pemt=Z[x];
Z[x]=Z[y];
Z[y]=pemt;
}
}
printf("t%ct",Z[x]);
}
}
break;
}
getche();
}
#include<stdio.h>
#include<conio.h>
int inputnum(void)
{
int num;
clrscr();
printf("Enter a Number :");
scanf("%d",&num);
printf("n");
return num;
}
void table(void)
{
int num2;
num2= inputnum();
for(int i=1; i<11; i++)
{
printf("%d x %d =
%dn",num2,i,num2*i);
}
}
void cont (void)
{
char ch;
#include<stdio.h>
#include<conio.h>
void heading(void)
{
printf("NED university of Engg. & Tech.n");
printf("Department of Metallurgical Engg.");
}
void add(int a,int b)
{
//int num1=4, num2=6;
printf("%d + %d = %d",a,b,a+b);
}
void table(int a)
{
//int num=2;
clrscr();
for(int i=1; i<11; i++)
printf("%d x %d = %dn",a,i,a*i);
//getch();
}

19. 18
do
{
clrscr();
table();
printf("n Press Y/y for Continue..... :");
ch=getche();
}
while(ch=='Y' || ch=='y');
}
#include<stdio.h>
#include<ctype.h>
#include<conio.h>
#include<string.h>
void main ()
{
clrscr();
int i=0;
char str[]="CS6";
int slen=strlen(str);
while (i<slen)
{
if (isalpha(str[i]))
printf ("character %c is alphabeticn",str[i]);
else
printf ("character %c is not alphabeticn",str[i]);
i++;
}
getch();
}
#include<ctype.h>
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main(void)
{
clrscr();
char arr[100];
printf("Type: ");
gets(arr);
int isdigit,slen=strlen(arr);
for (int i=0;i<slen;i++)
{
printf("n%d word is a : ",i+1);
if (isdigit(arr[i]))
printf("Digit");
else
printf("Character");
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main (void)
{
clrscr();
int vowel=0,c=0;
char ch;
while((ch=getch())!=’r’)
{
c++;
if (ch==’a’ || ch==’u’ || ch==’o’ || ch==’i’ || ch==’e’ )
vowel++;
}
#include<stdio.h>
#include<conio.h>
void main (void)
{
clrscr();
int num=0,i=0;
for ( ;num<=256;num++)
{
printf(“%d : %cn”,num,num);
i++;
if (i==24)
printf(“Press any key to continue….”);
getch();

20. 19
printf(“Character=%dnVowel=%d”,c,vowel);
getch();
}
clrscr();
i=0;
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main (void)
{
clrscr();
int id;
printf(“Enter a number less than 4:”);
scanf(“%d”,&id);
switch (id)
{
case 1:
printf(“A”);
break();
case 1:
printf(“B”);
break();
case 1:
printf(“C”);
break();
defaut:
printf(“Not Found”);
break();
}
getch();
}
#include<stdio.h>
#include<conio.h>
void main (void)
{
clrscr();
int a=1,b=0;
while (a<=10)
{
b=b+a;
printf(“nsum of Number %d + %d=%d”,a,a+1,b);
a++;
}
getch();
}
#include<stdio.h>
#include<conio.h>
void power(int a,int b);
void main()
{ clrscr();
int a,b;
printf("Enter a number ");
scanf("%d",&a);
printf("%d ki power ",a);
scanf("%d",&b);
power(a,b);
printf("nSum %dn",a+b); printf("Subtraction %dn",a-b);
printf("Multiplication %dn",a*b); printf("Divison %.3fn",(float)a/b);
printf("Remiander %dn",a%b);
getch(); }
void power(int a, int b)
{ long int e,c;

21. 20
e=a;
for (int s=1;s<b;s++) e=e*a;
printf("t=%ld",e);
int i,n;
printf("nSquare of ");
for (i=1;i<=a;i++)
c=a*a;
printf("%d is %ld",a,c); }