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Integer Limits

Microsoft Specific

The limits for integer types are listed in the following table. These limits are also defined in the standard header file LIMITS.H.

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)

_I64_MIN

Minimum value for a variable of type __int64

-9223372036854775808

_I64_MAX

Maximum value for a variable of type __int64

9223372036854775807

_UI64_MAX

Maximum value for a variable of type unsigned __int64

18446744073709551615 (0xffffffffffffffff)

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

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