integer-limits.md

description	title	ms.date	helpviewer_keywords	ms.assetid
Learn more about: Integer Limits	Integer Limits	01/29/2018	integral limits limits, integer limits.h header file integer limits	6922bdbf-0f49-443b-bc03-ee182e4cbd57

Integer Limits

Microsoft-specific

The limits for integer types are listed in the following table. Preprocessor macros for these limits are also defined when you include the standard header file <climits>.

Limits on Integer Constants

Constant	Meaning	Value
CHAR_BIT	Number of bits in the smallest variable that is not a bit field.	8
SCHAR_MIN	Minimum value for a variable of type signed char.	-128
SCHAR_MAX	Maximum value for a variable of type signed char.	127
UCHAR_MAX	Maximum value for a variable of type unsigned char.	255 (0xff)
CHAR_MIN	Minimum value for a variable of type char.	-128; 0 if /J option used
CHAR_MAX	Maximum value for a variable of type char.	127; 255 if /J option used
MB_LEN_MAX	Maximum number of bytes in a multicharacter constant.	5
SHRT_MIN	Minimum value for a variable of type short.	-32768
SHRT_MAX	Maximum value for a variable of type short.	32767
USHRT_MAX	Maximum value for a variable of type unsigned short.	65535 (0xffff)
INT_MIN	Minimum value for a variable of type int.	-2147483648
INT_MAX	Maximum value for a variable of type int.	2147483647
UINT_MAX	Maximum value for a variable of type unsigned int.	4294967295 (0xffffffff)
LONG_MIN	Minimum value for a variable of type long.	-2147483648
LONG_MAX	Maximum value for a variable of type long.	2147483647
ULONG_MAX	Maximum value for a variable of type unsigned long.	4294967295 (0xffffffff)
LLONG_MIN	Minimum value for a variable of type long long	-9223372036854775808
LLONG_MAX	Maximum value for a variable of type long long	9223372036854775807
ULLONG_MAX	Maximum value for a variable of type unsigned long long	18446744073709551615 (0xffffffffffffffff)

If a value exceeds the largest integer representation, the Microsoft compiler generates an error.

See also

Floating Limits