C++ 数值最大最小标识符一网打尽，INT_MIN/ INT_MAX/LONG_MIN/LONG_MAX 等等

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)
LLONG_MIN	Minimum value for a variable of type long long.	-9,223,372,036,854,775,807 - 1
LLONG_MAX	Maximum value for a variable of type long long.	9,223,372,036,854,775,807
ULLONG_MAX	Maximum value for a variable of type unsigned long long.	18,446,744,073,709,551,615 (0xffffffffffffffff)