How To Calculate Area Of Circle In C Program

Introduction

C Program to Calculate Area of Circle. I have used Code:: Blocks compiler for debugging purpose. But you can use any C programming language compiler as per your availability.

#include <stdio.h>
#define PI 3.141

int main(){
  float radius, area;
  printf("Enter Radius: ");

  scanf("%f", &radius);
  area = PI * radius * radius;

  printf("%f\n", area);
  return 0;
}

Result

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