Area of the Circle Solver in C

In this article I would like to share with you a simple program to solve the are of the circle using C language.

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Program Listing

circle.c

#include <stdio.h> 

#define Pi 3.1416 

main() {  

 int r;   

 float A; 

 printf(“\n Enter the radius:”); 

 scanf(“%d”,&r); A=Pi*r*r; 

 printf(“\n The area:%f”,A); 

 return 0;

 }