C Program for Program to find area of a circle

Area of a circle can simply be evaluated using following formula. 

Area = pi * r2
where r is radius of circle  

C

#include <math.h>
#include <stdio.h>
#define PI 3.142

double findArea(int r)
{
    return PI * pow(r, 2);
}

int main()
{
    printf("Area is %f", findArea(5));
    return 0;
}

Output:

Area is 78.550000

Time Complexity: O(1)

Auxiliary Space: O(1)

Please refer complete article on Program to find area of a circle for more details!

My Personal Notes arrow_drop_up

Save