C语言例程24：函數的值調用

#include <stdio.h>
#include <stdlib.h>

int square(int x);
int cube(int y);
int main(int argc, char *argv[])
{
    int m = 12;
    int n = 4;
    printf("%d %d\n", square(m), m);
    printf("%d %d\n", cube(n), n);
    system("pause");
    return 0;
}

int square(int x){
    x = x *x;
    return x;
}

int cube(int y){
    y = y * y * y;
    return y;
}