Data type

http://msdn.microsoft.com/en-us/library/s3f49ktz%28v=vs.80%29.aspx


Type Name Bytes Other Names Range of Values

int


4


signed


–2,147,483,648 to 2,147,483,647

unsigned int


4


unsigned


0 to 4,294,967,295

__int8


1


char


–128 to 127

unsigned __int8


1


unsigned char


0 to 255

__int16


2


short, short int, signed short int


–32,768 to 32,767

unsigned __int16


2


unsigned short, unsigned short int


0 to 65,535

__int32


4


signed, signed int, int


–2,147,483,648 to 2,147,483,647

unsigned __int32


4


unsigned, unsigned int


0 to 4,294,967,295

__int64


8


long long, signed long long


–9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

unsigned __int64


8


unsigned long long


0 to 18,446,744,073,709,551,615

bool


1


none


false or true

char


1


none


–128 to 127 by default

0 to 255 when compiled with /J

signed char


1


none


–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

unsigned long


4


unsigned long int


0 to 4,294,967,295

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 long


8


none (but equivalent to unsigned __int64)


0 to 18,446,744,073,709,551,615

enum


varies


none


See Remarks.

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