[ACM] 2007 tag checker - how to take a letter out

#include
#include

int main()
{
  int bytes_read;
  //int nbytes = 100;
  size_t nbytes = 100;
  char *my_string;

  puts ("Please enter a line of text.");

  /* These 2 lines are the heart of the program. */
  my_string = (char *) malloc (nbytes + 1);
  bytes_read = getline (&my_string, &nbytes, stdin);

  //Take particular letter out
    printf("%c",my_string[2]);
  if (bytes_read == -1)
    {
      puts ("ERROR!");
    }
  else
    {
      puts ("You typed:");
      //puts (my_string);
      int i=1;
      while((i < bytes_read)&&(*my_string != '#')){
              printf("%c\n",*my_string++);
              i++;
        }
    }

  return 0;
}