Tests for multibyte characters.
#include <ctype.h>
int ismultibyte (
const char *c);
(IN) Points to the null-terminated string to test.
Returns a nonzero value when the argument is a multibyte character. Otherwise, it returns zero.
The ismultibyte function tests the first character in the specified string and returns whether it is double-byte character. On NetWare®, multibyte sequences are always only two bytes.