C++ _mbbtype函数使用注意事项

Returns the byte type based on the previous byte.

int _mbbtype(
unsigned char c,
int type
);

Parameters

c
Character to test.

type
Type of byte to test for.

Return Value
_mbbtype returns the type of byte within a string.
This decision is context-sensitive as specified by the value of type,
which provides the control test condition.
type is the type of the previous byte in the string.
The manifest constants in the following table are defined in Mbctype.h.