[C언어]C언어 자료형~^^

Microsoft Visual C++ recognizes the types shown in the table below.

Type Name	Bytes	Other Names	Range of Values
int	*	signed, signed int	System dependent
unsigned int	*	unsigned	System dependent
__int8	1	char, signed char	–128 to 127
__int16	2	short, short int, signed short int	–32,768 to 32,767
__int32	4	signed, signed int	–2,147,483,648 to 2,147,483,647
__int64	8	none	–9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
bool	1	none	false or true
char	1	signed char	–128 to 127
unsigned char	1	none	0 to 255
short	2	short int, signed short int	–32,768 to 32,767
unsigned short	2	unsigned short int	0 to 65,535
long	4	long int, signed long int	–2,147,483,648 to 2,147,483,647
long long	8	none (but equivalent to __int64)	–9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
unsigned long	4	unsigned long int	0 to 4,294,967,295
enum	*	none	Same as int
float	4	none	3.4E +/- 38 (7 digits)
double	8	none	1.7E +/- 308 (15 digits)
long double	same as double	none	same as double
wchar_t	2	__wchar_t	0 to 65,535

                

A variable of __wchar_t designates a wide-character or multibyte character type. By default wchar_t is a typedef for unsigned short.

 

 

 

 

 

 

 

Sizes of Fundamental Types

Type	Size
bool	1 byte
char, unsigned char, signed char	1 byte
short, unsigned short	2 bytes
int, unsigned int	4 bytes
__intn	1, 2, 4, or 8 bytes depending on the value of n. __intn is Microsoft-specific.
long, unsigned long	4 bytes
float	4 bytes
double	8 bytes
long double1	8 bytes
long long	Equivalent to __int64.

¹   The representation of long double and double is identical. However, long double and double are separate types.