C语言_数据类型字节数

8/32位机：

sizeof unsigned char == 1
sizeof unsigned short == 2
sizeof unsigned int == 4
sizeof unsigned long == 4
sizeof unsigned long long == 8

64位机：

sizeof unsigned char == 1
sizeof unsigned short == 2
sizeof unsigned int == 4
sizeof unsigned long == 8
sizeof unsigned long long == 8

只有unsigned long在32、64位机上结果不同。