Obtains the length of a wide-character string

#include <wchar.h>
size_t wcslen ( const wchar_t *s  );

The wcslen( ) function calculates the length of the string addressed by its argument s. The length of a wide string is the number of wide characters in it, not counting the terminating null character (L'\0').

Example

wchar_t line[1024] =
                 L"This string could easily be 400 or 500 characters long. "
                 L"This string could easily be 400 or 500 characters long. "
                 L"\n";
wchar_t *readptr = line;
int columns = 80;
while ( wcslen( readptr ) > columns )  // While remaining text is too long,
{                                      // print a chunk with a final
  wprintf( L"%.*ls\\\n", columns-1, readptr );  // backslash and newline.
  readptr += columns -1;
}
wprintf( L"%ls\n", readptr );     // Print the rest, ending with a newline.

See Also

strlen( ); the example for mbtowc( )