Скільки бітів у long long?

long int is signed integral typ that is at least 32 bits, while a long long or long long int is a signed integral type is at least 64 bits. Це необов'язково означає, що long long is wider than a long . Багато платформ / АБІС використовує LP64 модель – де довгий (і потік) є 64 bits wide.

An unsigned version of the long long data type. An unsigned long long occupies 8 bytes of memory; it stores integer from 0 to 2^64-1, which is approximately 1.8×10^19 (18 quintillion, або 18 billion billion). Synonym для unsigned long long type uint64 .