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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
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