1sizeof (int8_t) = 1 2sizeof (int16_t) = 2 3sizeof (int32_t) = 4 4sizeof (int64_t) = 8 5sizeof (uint8_t) = 1 6sizeof (uint16_t) = 2 7sizeof (uint32_t) = 4 8sizeof (uint64_t) = 8 9sizeof (intptr_t) = 4 10sizeof (uintptr_t) = 4 11sizeof (uchar_t) = 1 12sizeof (ushort_t) = 2 13sizeof (uint_t) = 4 14sizeof (ulong_t) = 4 15sizeof (u_longlong_t) = 8 16sizeof (ptrdiff_t) = 4 17sizeof (signed) = 4 18sizeof (unsigned) = 4 19sizeof (void) = 0 20sizeof (char) = 1 21sizeof (short) = 2 22sizeof (int) = 4 23sizeof (long) = 4 24sizeof (_Bool) = 1 25sizeof (float) = 4 26sizeof (double) = 8 27