`/*
program to find the area of a cirle of given radius
*/
#include<stdio.h>
//#include<math.h>
int main()
{
float r=0.0f, a=0.0f;
char ch;
do
{
printf("Enter the radius of circle to find its area:\n");
scanf("%f", &r);
a = 3.14159 * r * r ;
printf("The area of the circle of radius %f is %.4f\n", r, a);
printf("Do you wish to continue?\t [y/n]\n");
scanf(" %c ", &ch);
}while( ch == 'y' );
if (ch == 'n')
{
printf("Goodbye\n");
}
else
{
printf("Sorry! Wrong input.\n");
}
return 0;
}

/* the same file is uploaded on my repository with below link:
`https://github.com/sarvendrasingh/LabCodes/blob/master/area.c
*/