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

char *str;

int main()
{
  str =  (char *) malloc(5 * sizeof(char));
  str[0] = 'N';
  str[1] = 'i';
  str[2] = 'c';
  str[3] = 'e';
  str[4] = 's';
  printf("All good: %c\n", str[1]);
  
  free(str);
  printf("Not good: %c\n", str[1]);

  return 0;
}