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

char *test;

int main (void)
{
  test = malloc (4);
  
  test[0] = 'a';
  test[1] = 'b';
  test[2] = 'c';
  test[3] = 'd';
  fprintf (stdout, "%.*s\n", 4, test);
  
  free (test);
  return 0;
}