#include <stdio.h>

float, int, int simple(int);

float x, int y, int z simple(int a) {
    x = a;
    y = a*a;
    z = a*a*a;
}

main(void) {
   float u=0;
   int w=0, v=0;

   u = simple(2);
   printf("u = %f, v = %d, w = %d \n", u, v, w);
   _, v, _ = simple(3);
   printf("u = %f, v = %d, w = %d \n", u, v, w);
   u, v, w = simple(4);
   printf("u = %f, v = %d, w = %d \n", u, v, w);
}