The limits (constant names, meanings, and values) for integral types are defined in the standard include file LIMITS.H. They are shown in Table 2.6.
Table 2.6 Limits for Integral Types
| 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., –127 | ||
| 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., Same as –127; 0 if /J option used. | ||
| CHAR_MAX | Maximum value for a variable of type char., Same as 127; 255 if /J option used. | ||
| MB_LEN_MAX | Maximum number of bytes in a multicharacter constant., 2 | ||
| SHRT_MIN | Minimum value for a variable of type short., –32767 | ||
| 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 int1., –32767 | ||
| INT_MAX | Maximum value for a variable of type int2., 32767 | ||
| UINT_MAX | Maximum value for a variable of type unsigned int3., 65535 (0xffff) | ||
| LONG_MIN | Minimum value for a variable of type long., –2147483647 | ||
| LONG_MAX | Maximum value for a variable of type long., 2147483647 | ||
| ULONG_MAX | Maximum value for a variable of type unsigned long. | 4294967295 (0xffffffff) | |
1The value for INT_MIN is –2147483648 for 32-bit target compilations
2The value for INT_MAX is 2147483647 for 32-bit target compilations
3The value for UINT_MAX is 4294967295 (0xffffffff) for 32-bit target compilations