C++ Integer Limits
Microsoft Specific
The limits for integer types are listed in the following table. These limits are defined in the standard header file LIMITS.H. Microsoft C also permits the declaration of sized integer variables, which are integral types of size 8-, 16-, or 32-bits. For more information on sized integers, see Sized Integer Types.
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. |
–2147483647 – 1 |
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. |
–2147483647 – 1 |
LONG_MAX |
Maximum value for a variable of type long. |
2147483647 |
ULONG_MAX |
Maximum value for a variable of type unsigned long. |
4294967295 (0xffffffff) |
If a value exceeds the largest integer representation, the Microsoft compiler generates an error.
END Microsoft Specific