Heh, it has way more than 8. For char, you have 3: signed char, unsigned char and char. It's not specified if char without keyword is signed or unsigned. You

Heh, it has way more than 8. For char, you have 3: signed char, unsigned char and char. It's not specified if char without keyword is signed or unsigned. You have integer types such as size_t, ssize_t and ptrdiff_t. They may, under the hood, match one of the other standard int types, however this differs per platform, so you can't e.g. just easily print size_t using the standard printf formatters, you really have to treat is as its own type. Also wchar_t and such of course. Then you have all the integers in stdint.h and inttypes.h. Same here applies as for size_t. At least you know how many bits you get from several of them, unlike from something like "long". Then your compiler may also provide additional types such as __int128 and __uint128_t.