Find the area of a circle, given the radius

Find the area of a circle, given the radius

Input:

Enter the radius of the circle:5

Output:

Area of circle is 78.500000

Implementation:

#include <stdio.h> #define pi 3.14 int main(void) { int radius; printf("Enter the radius of the circle:\n"); scanf("%d",&radius); printf("Area of cirlce is %f",(pi*radius*radius)); //can also use pi * pow(radius,2) return 0; }