C++里long的字节数

标准规定long的大小不小于int也就是说sizeof(long)>=sizeof(int).

Numerical type sizes in C (bits)

Platforms  \   Types	char	short	int	size_t	ssize_t	long	long long	void*	off_t	float	double
Win32, gcc nuwen 7.2	8	16	32	32	32	32	64	32	32	32	64
Win32, gcc nuwen 7.2 LFF	8	16	32	32	32	32	64	32	32	32	64
Win32, MSVC	8	16	32	32	-	32	64	32	32	32	64
Linux32, gcc	8	16	32	32	32	32	64	32	32	32	64
Linux32, gcc LFF	8	16	32	32	32	32	64	32	64	32	64
Win64, gcc mingw64	8	16	32	64	64	32	64	64	32	32	64
Win64, gcc mingw64 LFF	8	16	32	64	64	32	64	64	64	32	64
Win64, MSVC	8	16	32	64	-	32	64	64	32	32	64
Linux64, gcc	8	16	32	64	64	64	64	64	64	32	64
Linux64, gcc LFF	8	16	32	64	64	64	64	64	64	32	64

https://www.assembla.com/spaces/zsync-windows/wiki/Types_sizes