#include <stdio.h>

void altera(int vet[], int x) {
  vet[0] = -1;
  x = -1;
}


int main() {
  int vet[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
  int x = 0;

  altera(vet, x);
  printf("vet[0] = %d \n", vet[0]);
  printf("x      = %d \n", x);
  
  return 0;
}