Answer to Question #213610 in C for a.s.vijay

Question

Write a C program to find the area of circle using preprocessor directives.

Answer 1

#include <stdio.h>
#define PI 3.142


int main(){
  float rad, area;
  printf("Radius: ");
  scanf("%f", &rad);
  area = PI * rad * rad;
  printf("%f\n", area);
  return 0;
}