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Call by value & call by reference in C [calc area and volume of a sphere]

R7TSN asked:

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I have to write a sphere () function that calculates the area and volume of a sphere. The function receives three transfer parameters: the radius and two pointers to double variables, in which the function sphere () writes back the area and the volume of the sphere . The input and output takes place in main (). 

For a sphere with radius R the following applies: area = 4 * PI * R * R, volume = 4 * PI * R * R * R / 3

What I have tried:

So far I've come to that, its literally not much but i dont know how to slove it
#include <stdio.h>
#define pi 3.14159
void sphere(double*, int*);

int main(void) {

    setvbuf(stdout, NULL, _IONBF, 0);
    setvbuf(stderr, NULL, _IONBF, 0);

    return 0;
void sphere() {
Tags: C


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