Header File 

mbstring.h 

Category 

Classification Routines 

Prototype 

int _ismbclegal(unsigned int c); 

Description 

_ismbclegal tests whether each byte of the c argument is in the code page that is currently in use. 

Return Value 

_ismbclegal returns a nonzero value if the argument c is a valid multibyte character on the current code page. Otherwise, the function returns zero.