Example.6. C program to calculate and print area and perimeter of the rectangle?
#include <stdio.h>
int main()
{
int l,b,a,p;
printf("Enter length and width of rectangle ");
scanf("%d %d",&l,&b);
a=l*b;
p=2*(l+b);
printf("area = %d perimeter = %d",a,p);
return 0;
}
Output:
Enter length and width of rectangle 2 3 area = 6 perimeter = 10
Example.7. C program to calculate and print area and circumference of a circle.
#include <stdio.h>
#define pi 3.1415
int main()
{
float r,a,c;
printf("Enter radius of circle ");
scanf("%f",&r);
a=pi*r*r;
c=2*pi*r;
printf("area = %f circumference = %f",a,c);
return 0;
}
Output:
Enter radius of circle 2.3 area = 16.618534 circumference = 14.450900
Example.8. C program to take input for 4 numbers calculate and print their sum, product, and average?
#include <stdio.h>
int main()
{
float a,b,c,d,s,p,av;
printf("Enter 4 nos ");
scanf("%f %f %f %f",&a,&b,&c,&d);
s=a+b+c+d;
p=a*b*c*d;
av=(a+b+c+d)/4;
printf("sum = %f prod = %f average = %f",s,p,av);
return 0;
}
Output:
Enter 4 nos 10 20 30 40 sum = 100.000000 prod = 240000.000000 average = 25.000000
