Which is why I usually convert to intmax_t or uintmax_t, or to some type that I know is wide enough: uint64_t foo = ...; printf("foo = %ju\n", (uintmax

Which is why I usually convert to intmax_t or uintmax_t, or to some type that I know is wide enough: uint64_t foo = ...; printf("foo = %ju\n", (uintmax_t)foo); /* OR */ printf("foo = %llu\n", (unsigned long long)foo);