How do you find the area of circle using function?

Answer 1

#include<stdio.h>

main()

{

int radius;

float a1;

float area(int r);

printf("Enter the r value");

scanf("%d",&radius);

a1=area(radius);

printf("The answer=%d",a1);

}

float area(int r)

{

float a2;

a2=3.14*r*r;

return(a2);

}

getch();