C语言基本类型详解

刚刚看到一个博客上贴了这个，解决了我一直以来的疑问：int和long是不是一样的？答案是：不确定。

转载自：http://itnewsvendor.appspot.com/2379028-int_long_unsigned.html

 

数据类型名称	字节数	别名	取值范围
int	*	signed, signed int	由操作系统决定，即与操作系统的＂字长＂有关
unsigned int	*	unsigned	由操作系统决定，即与操作系统的＂字长＂有关
__int8	1	char, signed char	–128 到 127
__int16	2	short, short int, signed short int	–32,768 到 32,767
__int32	4	long, long int, signed long int	–2,147,483,648 到 2,147,483,647
__int64	8	long long, long long int, signed long long int	–9,223,372,036,854,775,808 到 9,223,372,036,854,775,807
bool	1		false 或 true
char	1	signed char, (__int8)	–128 到 127
unsigned char	1		0 到 255
short	2	short int, signed short int, (__int16)	–32,768 到 32,767
unsigned short	2	unsigned short int	0 到 65,535
long	4	long int, signed long int, (__int32)	–2,147,483,648 到 2,147,483,647
unsigned long	4	unsigned long int	0 到 4,294,967,295
long long	8	long long int, signed long long int, (__int64)	–9,223,372,036,854,775,808 到 9,223,372,036,854,775,807
unsigned long long	8	unsigned long long int	0 到 18,446,744,073,709,551,615
enum	*		由操作系统决定，即与操作系统的＂字长＂有关
float	4	无	3.4E +/- 38 (7 digits)
double	8	无	1.7E +/- 308 (15 digits)
long double	*	无	视平台而定，一般来说精度比double高
wchar_t	2	__wchar_t	0 到 65,535