C++学习笔记（1）——数据类型占空间大小

boolean	bool	1 byte
character	char	1 byte	May be signed or unsigned
	wchar_t	1 byte
	char16_t	2 bytes	C++11 type
	char32_t	4 bytes	C++11 type
integer	short	2 bytes
	int	2 bytes
	long	4 bytes
	long long	8 bytes	C99/C++11 type
floating point	float	4 bytes
	double	8 bytes
	long double	8 bytes