mbrlen - get number of bytes in multi-byte character

Syntax	#include <wchar.h> size_t mbrlen(const char *s, size_t n, mbstate_t *ps);
Description	mbrlen() returns the number of bytes required to complete a multi-byte character starting at the position *s. A maximum of n bytes are evaluated. mbrlen() corresponds to the call mbrtowc(NULL, s, n, ps!= NULL ? ps: internal) where internal is the mbstate_t object for the function. See mbrtowc() for a detailed description.