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

int main(void)
  {
  char *ptr;
  long  counter = 0;

  ptr = malloc(1);


  while (1)
    {
    counter++;

    memcpy(ptr, "x", 1);
    printf("%i\n", counter);
    ptr++;
    }

  }