// Helper function with arguments and return value #include #include int add(int a, int b); int main(void) { // Prompt user for x int x = get_int("x: "); // Prompt user for y int y = get_int("y: "); // Perform addition int z = add(x, y); printf("%i\n", z); } int add(int a, int b) { int c = a + b; return c; }