C Program to Find Area and Circumference of Circle
Program
#include<stdio.h>
#include<conio.h>
#define PI 3.141592
int main()
{
float radius, area, circum;
clrscr(); // Clears the screen
printf("Enter radius of circle: ");
scanf("%f", &radius);
area = PI*radius*radius;
circum = 2*PI*r;
printf("Area = %f\n",area);
printf("Circumference = %f",circum);
getch(); // Holds the output
return 0;
}
Output of the above program :
Enter radius of circle: 5 ↲ Area = 78.539800 Circumference = 31.415920 Note: ↲ indicates ENTER is pressed.