int     aeroport(char *str)
{
  char  *vit;
  int   a;
  int   b;
  int   c;
  char  *cmp;

  vit = "5000";
  c = my_getnbr(vit);
  a = my_strlen(str);
  cmp = malloc(sizeof(*cmp) * a);
  if (cmp == NULL)
    exit (-1);
  b = 32;
  while (a >= 0)
    {
      cmp[a] = b;
      a--;
    }
  while (b >= 32 && b <= 126)
    {
      my_putchar('\r');
      a = 0;
      while (str[a] != '\0' && cmp[a] != '\0')
        {
          if (str[a] == cmp[a])
            {
              my_putchar(str[a]);
            }
          else
            my_putchar(cmp[a]);
          a++;
        }
      while (a >= 0)
        {
          if (str[a] == cmp[a])
            cmp[a] = str[a];
          else
            cmp[a] = b;
          a--;
        }
      a = my_strlen(str);
      usleep(c);
      b++;
    }
  free(cmp);
  my_putchar('\n');
  return (0);
}