"lanael" <no at mail.never> wrote in message news:mn.84927d63e30b23b4.35838 at mail.never... > printf("u = \t %llx \t %llb\n",u,u); > printf("u1 = \t %llx \t %llb\n",u1,u1); Don't. Use. printf. writefln("u = \t %x \t %b", u, u); writefln("u1 = \t %x \t %b", u1, u1);