Something

int     fin(int nb, int count)
{
  int   c;
  int   modulo;
  modulo = 1;
  c = 1;
  while (c != count)
    {
     modulo = modulo * 10;
     c++;
   }
  my_putchar((nb / modulo) + 48);
  while (modulo >= 10)
    {
     c = nb % modulo / (modulo / 10);
     modulo = modulo / 10;
     my_putchar(c + 48);
   }

}

int      my_put_nbr()

{
  int   c;
  int   nb;
  int   count;

  if (nb < 0)
    {
      nb = nb * -1;
      my_putchar('-');
    }
    c = nb;
    count = 1;
    while (c > 9)
      {
        c = c / 10;
        count++;
      }


    fin(nb, count);
}