Compute the length of a wide-character string
#include <wchar.h> size_t wcslen( const wchar_t * ws );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The wcslen() function counts the wide characters in the string pointed to by ws.
The number of wide characters, not counting the terminating NUL.
ANSI, POSIX 1003.1