C++最大值
C++中, 经常会使用, 某些类型的最大值, 如int的最大整数(INT_MAX), C的函数中, 包含了这些宏定义.
头文件:
#include <climits>
具体参见:
| name | expresses | value* |
|---|---|---|
| CHAR_BIT | Number of bits in a char object (byte) | 8 or greater* |
| SCHAR_MIN | Minimum value for an object of type signed char | -127 (-27+1) or less* |
| SCHAR_MAX | Maximum value for an object of type signed char | 127 (27-1) or greater* |
| UCHAR_MAX | Maximum value for an object of type unsigned char | 255 (28-1) or greater* |
| CHAR_MIN | Minimum value for an object of type char | either SCHAR_MIN or 0 |
| CHAR_MAX | Maximum value for an object of type char | either SCHAR_MAX or UCHAR_MAX |
| MB_LEN_MAX | Maximum number of bytes in a multibyte character, for any locale | 1 or greater* |
| SHRT_MIN | Minimum value for an object of type short int | -32767 (-215+1) or less* |
| SHRT_MAX | Maximum value for an object of type short int | 32767 (215-1) or greater* |
| USHRT_MAX | Maximum value for an object of type unsigned short int | 65535 (216-1) or greater* |
| INT_MIN Minimum | value for an object of type int | -32767 (-215+1) or less* |
| INT_MAX | Maximum value for an object of type int | 32767 (215-1) or greater* |
| UINT_MAX | Maximum value for an object of type unsigned int | 65535 (216-1) or greater* |
| LONG_MIN | Minimum value for an object of type long int | -2147483647 (-231+1) or less* |
| LONG_MAX | Maximum value for an object of type long int | 2147483647 (231-1) or greater* |
| ULONG_MAX | Maximum value for an object of type unsigned long int | 4294967295 (232-1) or greater* |
| LLONG_MIN | Minimum value for an object of type long long int | -9223372036854775807 (-263+1) or less* |
| LLONG_MAX | Maximum value for an object of type long long int | 9223372036854775807 (263-1) or greater* |
| ULLONG_MAX | Maximum value for an object of type unsigned long long int | 18446744073709551615 (264-1) or greater* |
参考链接：https://blog.csdn.net/caroline_wendy/article/details/24311895