text: void ft_putnbr(int nb)
  {
      unsigned int num;
  
      if (nb < 0)
      {
          ft_putchar('-');
          num = -1 * nb;
      }
      else
          num = nb;
      if (num < 10 && (num = num + '0'))
          ft_putchar(num);
      else
      {
          ft_putnbr(num / 10);
          num = (num % 10) + '0';
          ft_putchar(num);
      }
  }