C Program to find area and circumference of circle

#include

 

int main() {

 

   int rad;

   float PI = 3.14, area, ci;

 

   printf("\nEnter radius of circle: ");

   scanf("%d", &rad);

 

   area = PI * rad * rad;

   printf("\nArea of circle : %f ", area);

 

   ci = 2 * PI * rad;

   printf("\nCircumference : %f ", ci);

 

   return (0);

}