void     dec_to_bin(int dec, char *c)
{

    int poids_fort;
    int taille_int;
    int flag_1 = 0;

    taille_int = 8 * sizeof(int);

    poids_fort = 1 << taille_int -1;

    while ( ( poids_fort > 0 ) )
	{
		if ( ( ( dec/poids_fort ) > 0 ) )
		{
			printf("1");
			dec = dec - poids_fort;
			flag_1 = 1;
        }
		else
		{
			if ( flag_1 )
                printtf("0");
		}
		poids_fort = poids_fort / 2;

	}
}