BPOPS203 PRINCIPLES OF PROGRAMMING USING C LAB Manual.pdf

`
PRINCIPLES OF PROGRAMMING USING C LABORATORY [ BPOPS203 ]
Dr. A. Syed Mustafa, HKBKCE. Page 1 of 25 BPOPS Lab Programs
PRINCIPLES OF PROGRAMMING
USING C LABORATORY [ BPOPS203]
by:
Dr. A. Syed Mustafa
Prof. Madhusudhana
DEPARTMENT OF INFORMATION SCIENCE
AND ENGINEERING

`
HKBK COLLEGE OF E

`

`
1. Simulation of a Simple Calculator.
/*Simulation of a Simple Calculator*/
#include <stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
char op;
printf("Simple Calculatorn");
printf("Enter the Expressionn");
scanf("%d%c%d",&a,&op,&b); /* read input eg. 2+3 */
switch(op)
{
case '+': c=a+b; /*add 2 numbers*/
break;
case '-': c=a-b; /*subtract 2 numbers*/
break;
case '*': c=a*b; /*multiply 2 numbers*/
break;
case '/': c=a/b; /*divide 2 numbers*/
break;
case '%': c=a%b; /*find reminder of 2 numbers*/
break;
default: printf("Invalid Expressionn");
}
printf("%dn",c); /* display result*/
getch();
}
OUTPUT:

`
2. Compute the roots of a quadratic equation by accepting the coefficients. Print
appropriate messages.
#include <stdio.h>
#include<conio.h>
void main()
{
int a,b,c,d;
float r,r1,r2;
printf("Enter the Coefficients a,b and cn");
scanf("%d%d%d",&a,&b,&c); /* read input - ax^2+bx+c */
if(a*b*c==0)
{
printf("Please enter non zero valuesn");
getch();
exit(0);
} /*end if*/
d=b*b-4*a*c;
r=2*a;
if(d==0)
{
printf("Roots are Real and Equaln");
r1=r2=-b/r;
printf("Root 1: %.2f, Root 2: %.2fn",r1,r2);
}
else if(d>0)
{
printf("Roots are Real and Distinctn");
r1=(-b+sqrt(d))/r;
r2=(-b-sqrt(d))/r;
printf("Root 1: %.2f, Root 2: %.2fn",r1,r2);
}
else
{
printf("Roots are Imaginaryn");
r1=-b/r;
r2=sqrt(-d)/r;
printf("Root 1: %.2f+i%.2f, Root 2: %.2f-i%.2fn",r1,r2,r1,r2);
} /*end else*/
getch();
}/* end main*/

`
OUTPUT:

`
3. An electricity board charges the following rates for the use of electricity: for the first 200
units 80 paise per unit: for the next 100 units 90 paise per unit: beyond 300 units Rs 1
per unit. All users are charged a minimum of Rs.100 as meter charge. If the total amount
is more than Rs 400, then an additional surcharge of 15% of total amount is charged.
Write a program to read the name of the user, number of units consumed and print out
the charges.
#include <stdio.h>
#include<conio.h>
void main()
{
int n,mc=100;
float bill;
char name[50];
printf("Enter the Name of the Usern");
scanf("%s",name);
printf("Enter the number of units electricity consumedn");
scanf("%d",&n);
if(n<=200)
bill=n*0.8;
else if(n<=300)
bill=160+(n-200)*0.9;
else if(n>300)
bill=250+(n-300)*1;
bill=bill+mc; /* meter charge added with bill*/
if(bill>400)
bill=bill+bill*0.15;
printf("Consumer Name: %sn",name);
printf("No. of Units Consumed: %dn",n);
printf("Total Bill Amount Rs. %.2fn",bill);
getch();
}
OUTPUT:

`
4.
#include <stdio.h>
#include<conio.h>
void main()
{
int n,i,j,k,m;
printf("nEnter the value of n:n");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
for(j=1;j<=n-i;j++) /*print spaces*/
printf(" ");
for(k=1; k<=i ; k++) /*print increment numbers*/
printf("%d ",k);
for(m=i-1; m>0; m--) /*print decrement numbers*/
printf("%d ",m);
printf("n");
} /*end for*/
getch();
}/* end main*/
OUTPUT:

`
5. Implement Binary Search on Integers.
#include <stdio.h>
#include<conio.h>
void main()
{
int a[100],n,s,e,mid,key,f=0,i;
printf("nEnter the total no. of elements:n");
scanf("%d",&n);
printf("nEnter the elements in ascending ordern");
for(i = 0 ; i < n ; i++) /*read all elements*/
scanf("%d",&a[i]);
printf("nEnter the element to be searched:n");
scanf("%d",&key);
s=0; /*start index*/
e=n-1; /*ending index*/
while(s<=e)
{
mid=(s+e)/2; /*middle index*/
if(key==a[mid]) /* comparing key value with middle value*/
{
f=1;
break;
}
if(key>a[mid])
s=mid+1;
else
e=mid-1;
} /* end while*/
if(f)
printf("Search Successfuln");
else
printf("Search UnSuccessfuln");
getch();
}/* end main*/
OUTPUT:

`
6. Implement Matrix multiplication and validate the rules of multiplication.
#include <stdio.h>
#include<conio.h>
void main()
{
int a[10][10],b[10][10],c[10][10];
int m,n,p,q,i,j,k;
printf("nEnter the order of the matrix A:n");
scanf("%d%d",&m,&n);
printf("nEnter the order of the matrix B :n");
scanf("%d%d",&p,&q);
if(n!=p) /*comparing colmof Matrix A with row of Matrix B*/
{
printf("Matrix Multiplication is not possiblen");
getch();
exit(0);
} /* end if*/
printf("nEnter the elements of matrix An");
for(i = 0 ; i < m ; i++)
for(j = 0 ; j < n ; j++)
scanf("%d",&a[i][j]);
printf("nEnter the elements of matrix Bn");
for(i = 0 ; i < p ; i++)
for(j = 0 ; j < q ; j++)
scanf("%d",&b[i][j]);
for(i = 0 ; i < m ; i++)
for(j = 0 ; j < q ; j++)
{
c[i][j]=0;
for(k = 0 ; k < n ; k++)
c[i][j]= c[i][j]+a[i][k]*b[k][j];
}/*end for j loop*/
printf("nMATRIX A n");
for(i = 0 ; i < m ; i++)
{
for(j = 0 ; j < n ; j++)
printf("%dt", a[i][j]);
printf("n");
}/*end for i loop*/
printf("nMATRIX B n");

`
for(i = 0 ; i < p ; i++)
{
for(j = 0 ; j < q ; j++)
printf("%dt", b[i][j]);
printf("n");
}/*end for i loop*/
printf("nResultant MATRIXn");
for(i = 0 ; i < m ; i++)
{
for(j = 0 ; j < q ; j++)
printf("%dt", c[i][j]);
printf("n");
} /*end for i loop*/
getch();
}/* end main*/
OUTPUT:

`
7. Compute sin(x)/cos(x) using Taylor series approximation. Compare your result with the
built-in library function. Print both the results with appropriate inferences.
/*Program to compute Sin(x) using Taylor series approximation given by Sin(x) = x -(x3/3!) +
(x5/5!) - (x7/7!) + ....... Compare the result with the built- in Library function and print both the
results.*/
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int i,degree;
float x,sum=0,term,nume,deno;
printf("Enter the value of degree:");
scanf("%d",&degree);
x=degree*(3.142/180);/* converting degree to radian*/
nume=x;
deno=1;
i=2;
do
{
term=nume/deno;
nume=-nume*x*x; /*multiply by x twice*/
deno=deno*i*(i+1); /* multiply by next and next value*/
sum=sum+term;
i=i+2;
}while(fabs(term)>=0.00001); /*check float absolute to 0.00001*/
printf("the sine of %d is %.2fn",degree,sum);
printf("the sine function of %d is %.2f:",degree,sin(x));
getch();
}
OUTPUT:

`
8. Sort the given set of N numbers using Bubble sort.
#include <stdio.h>
#include<conio.h>
void main()
{
int n,i,j,a[100],temp;
printf("nEnter the total no. of elements:n");
scanf("%d",&n);
printf("nEnter the elementsn");
for(i = 0 ; i < n ; i++) /*read all elements*/
scanf("%d",&a[i]);
for(i = 0 ; i < n-1; i++)
for(j = 0 ; j < n-i-1; j++)
if(a[j] > a[j+1]) /*compare next 2 numbers*/
{
temp = a[j]; /*swap 2 numbers*/
a[j] = a[j+1];
a[j+1] = temp;
}
printf("nThe Sorted elements aren");
for(i = 0 ; i < n ; i++) /* display all elements*/
printf("%dn",a[i]);
getch();
}/* end main*/
OUTPUT:

`
9. Write functions to implement string operations such as compare, concatenate, and find
string length. Use the parameter passing techniques.
#include<stdio.h> /* string length, concate , compare*/
#include<conio.h>
int slength(char s[])
{
int i;
for(i=0;s[i]!=0;i++);
return (i);
} /*end slength*/
void concat(char s1[100],char s2[100])
{
int len,i;
len=slength(s1);
for(i=0;s2[i]!=0;i++)
s1[len+i]=s2[i];
s1[len+i]=0;
}/*end concate*/
void compare(char s1[100],char s2[100])
{
int l1,l2,i;
l1=slength(s1);
l2=slength(s2);
if(l1!=l2)
printf("Strings are not equaln");
else
{
for(i=0;i<l1;i++)
if(s1[i]>s2[i])
{
printf("String %s is greater than string %s1n",s1,s2);
return;
}/*end if*/
else if(s1[i]<s2[i])
{
printf("String %s is smaller than string %s1n",s1,s2);
return;
}/* else if*/
printf("String %s is equal with string %sn",s1,s2);
}/* else*/
}/* end compare*/

`
void main()
{
char s1[100],s2[100];
int len;
printf("Enter the first stringn");
gets(s1);
printf("Enter the second stringn");
gets(s2);
len=slength(s1);
printf("Length of '%s' is %dn",s1,len);
compare(s1,s2);
concat(s1,s2);
printf("concatenated string is %sn", s1);
getch();
}
OUTPUT:

`
10. Implement structures to read, write and compute average- marks of the students, list the
students scoring above and below the average marks for a class of N students.
#include<stdio.h>
typedef struct /* defining structure*/
{
int rollno;
char name[50];
float marks;
}student;
void main()
{
int n,i;
float sum=0,avg;
student s[50]; /* declaring 50 students*/
printf("Enter the total no of studentsn");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("Enter the student: %d datails:n",i+1);
printf("Enter the student Rollno:");
scanf("%d",&s[i].rollno);
printf("Enter the student Name:");
scanf("%s",s[i].name);
printf("Enter the marks:");
scanf("%f",&s[i].marks);
sum=sum+s[i].marks;
}
avg=sum/n;
printf("Student details:n");
printf("RollnotNametMarksn");
for(i=0;i<n;i++)
{
printf("%dt",s[i].rollno);
printf("%st",s[i].name);
printf("%.2fn",s[i].marks);
}
printf("Average marks is %.2fn",avg);
printf("Below average Students details:n");
for(i=0;i<n;i++)
{
if(s[i].marks<avg)
{

`
} /* end if*/
} /* end for*/
printf("Above average Students details:n");
for(i=0;i<n;i++)
{
if(s[i].marks>avg)
{
} /* end if*/
} /* end for*/
getch();
} /* end main*/
OUTPUT:

`
11. Develop a program using pointers to compute the sum, mean and standard deviation of
all elements stored in an array of N real numbers.
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a[10],*ptr,mean,std,sum=0,sumstd=0;
int n,i;
printf("Enter the total numbersn");
scanf("%d",&n);
printf("Enter the real numbersn");
for(i=0;i<n;i++)
scanf("%f",&a[i]); /* Reading Input Of N Numbers*/
ptr=a; /*assigning address of array to pointer variable*/
for(i=0;i<n;i++)
sum=sum + *ptr++; /* adding real numbers stored in array through pointer*/
mean=sum/n; /* finding average or mean*/
ptr=a; /*assigning address of array to pointer variable*/
for(i=0;i<n;i++)
{
sumstd=sumstd+pow((*ptr-mean),2); /*finding standard deviation*/
ptr++; /* incrementing pointer to fetch next value*/
}
std=sqrt(sumstd/n); /*finding standard deviation*/
printf("sum=%.2fn",sum);
printf("Mean=%.2fn",mean);
printf("standard deviation=%.2fn",std);
getch( );
}
OUTPUT:

`
12. Write a C program to copy a text file to another, read both the input file name and
target file name.
#include<stdio.h>
#include<conio.h>
void main()
{
char ch, fname1[50], fname2[50];
FILE *f1, *f2;
printf("Enter the file name to copy its content(source file)n");
scanf("%s",fname1);
printf("Enter the file name to write the copied content(target file)n");
scanf("%s",fname2);
f1= fopen(fname1, "r");
if (fname1 == NULL)
{
printf("Can not read filen");
exit(0);
}
f2 = fopen(fname2, "w");
if (fname2== NULL)
{
fclose(f1);
printf("Can not write to filen");
exit(0);
}
while ((ch = fgetc(f1)) != EOF)
fputc(ch, f2);
printf("File copied successfullyn");
fclose(f1);
fclose(f2);
getch( );
}
OUTPUT:

`
Additional Programs
1. Write a C program to compute addition, subtraction, multiplication and division on
Complex Numbers.
#include<stdio.h>
struct complex
{
float rp;
float ip;
};
typedef struct complex COMP;
COMP readcomplex()
{
COMP c;
printf("Enter the details of Complex number:n");
scanf("%f%f",&c.rp,&c.ip);
return(c);
}
COMP addcomplex(COMP c1,COMP c2)
{
COMP c3;
c3.rp=c1.rp+c2.rp;
c3.ip=c1.ip+c2.ip;
return c3;
}
COMP subcomplex(COMP c1,COMP c2)
{
COMP c4;
c4.rp=c1.rp-c2.rp;
c4.ip=c1.ip-c2.ip;
return c4;
}
COMP multicomplex(COMP c1,COMP c2)
{
COMP c5;
c5.rp=c1.rp*c2.rp-c1.ip*c2.ip;
c5.ip=c1.rp*c2.ip+c1.ip*c2.rp;
return c5;
}

`
COMP dividecomplex(COMP c1,COMP c2)
{
COMP c6;
c6.rp=(c1.rp*c2.rp+c1.ip*c2.ip)/(c2.rp*c2.rp+c2.ip*c2.ip);
c6.ip=(c2.rp*c1.ip-c2.ip*c1.rp)/(c2.rp*c2.rp+c2.ip*c2.ip);
return c6;
}
void displaycomplex(COMP c)
{
if(c.ip<0)
printf("%.2f%.2fin",c.rp,c.ip);
else
printf("%.2f+%.2fin",c.rp,c.ip);
}
int main()
{
struct complex c1,c2,c3,c4,c5,c6;
c1=readcomplex();
c2=readcomplex();
c3=addcomplex(c1,c2);
c4=subcomplex(c1,c2);
c5=multicomplex(c1,c2);
c6=dividecomplex(c1,c2);
printf("Complex number 1 is:n");
displaycomplex(c1);
printf("Complex number 2 is:n");
displaycomplex(c2);
printf("Complex number addition is:n");
displaycomplex(c3);
printf("Complex number subtraction is:n");
displaycomplex(c4);
printf("Complex number multiplication is:n");
displaycomplex(c5);
printf("Complex number division is:n");
displaycomplex(c6);
return(0);
}

`
OUTPUT:

`
2. Write a C program to compute Electricity Bill
#include<stdio.h>
typedef struct
{
long telno;
char cname[50];
int units;
float bill;
}Tbill;
int main()
{
Tbill t1;
int fc=250;
printf("Enter the Telephone numbern");
scanf("%d",&t1.telno);
printf("Enter the consumer namen");
scanf("%s",t1.cname);
printf("Enter the no of units usedn");
scanf("%d",&t1.units);
if(t1.units<=50)
t1.bill=t1.units*1;
else
t1.bill=t1.units*1.5;
t1.bill=fc+t1.bill;
printf("Telephone Bill Details:n");
printf("Telephone no: %ldn",t1.telno);
printf("conusmer Name: %sn",t1.cname);
printf("No of units used: %dn",t1.units);
printf("Bill Amount: %.2fn",t1.bill);
return 0;
}
OUTPUT:

`
3. Write a C program to convert a string of characters to upper case/lower case.
#include<stdio.h>
#include<string.h>
void main()
{
char s1[100],s2[100];
int len,i;
printf("Enter the first stringn");
gets(s1);
for(i=0;s1[i]!=0;i++) /* getting each char from s1*/
if(s1[i]>='A' && s1[i]<='Z')
s2[i]=s1[i]+32; /* convering to lowercase*/
else if(s1[i]>='a' && s1[i]<='z')
s2[i]=s1[i]-32; /* convering to uppercase*/
else
s2[i]=s1[i]; /*copying other than alpha character to s1 at last*/
s2[i]=0; /* adding null value to string*/
printf("string in upper lower case is %sn",s2);
getch();
}
OUTPUT:

`
4. Write a C program to check whether a string is palindrome or not.
#include<stdio.h> /* srtring palindrome*/
void main()
{
char s[100];
int len,i,p=1;
printf("Enter the stringn");
scanf("%s",s);
for(i=0;s[i]!=0;i++);
len=i;
for(i=0;i<len/2;i++)
if(s[i]!=s[len-1-i])
{
p=0;
break;
}
if(p)
printf("string %s is palaindromen",s);
else
printf("string %s is not a palaindromen",s);
getch();
}
OUTPUT:

BPOPS203 PRINCIPLES OF PROGRAMMING USING C LAB Manual.pdf

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