#include <stdio.h> #include <stdlib.h> void mean(int a, int b, int return_val ) { return_val = (a + b) / 2; printf("return_val in mean in %d\n",return_val); } int main() { int i, j; int answer; i = 7; j = 9; mean(i, j, answer); printf("The mean of %d and %d = %d\n", i, j, answer); }