// filename:c2011-K-3-9-2-3-1-ex.c
// original examples and/or notes:
// 		(c) ISO/IEC JTC1 SC22 WG14 N1570, April 12, 2011
// 			C2011 K.3.9.2.3.1 The wcstok_s function
// compile and output mechanism:
// 		(c) Ogawa Kiyoshi, kaizen@gifu-u.ac.jp, December.29, 2013
// compile errors and/or wornings:
// 		(c) Apple LLVM version 4.2 (clang-425.0.27) (based on LLVM 3.2svn)
// 			Target: x86_64-apple-darwin11.4.2 //Thread model: posix
// 		(c) LLVM 2003-2009 University of Illinois at Urbana-Champaign.
// Example 
#define __STDC_WANT_LIB_EXT1__ 1
#include <stdio.h>
#include <wchar.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <wchar.h>
//wchar_t *wcstok_s(
//wchar_t *strToken,
//const wchar_t *strDelimit, 
//   wchar_t**context
//);
//wchar_t *wcstok_s(wchar_t * restrict ,rsize_t * restrict ,const wchar_t * restrict ,wchar_t ** restrict );
//wchar_t *wcstok_s(wchar_t * _RESTRICT __s1, rsize_t * _RESTRICT __s1max, const wchar_t * _RESTRICT __s2, wchar_t ** _RESTRICT __ptr);

int main(void)
{
static wchar_t str1[] = L"?a???b,,,#c";
static wchar_t str2[] = L"\t \t";
wchar_t *t, *ptr1, *ptr2;
rsize_t max1 = wcslen(str1)+1;
rsize_t max2 = wcslen(str2)+1;
	t = wcstok_s(str1, &max1, "?", &ptr1); // t points to the token "a"
		wprintf(L"%ls",t);
	t = wcstok_s(NULL, &max1, ",", &ptr1); // t points to the token "??b"
		wprintf(L"%ls",t);
	t = wcstok_s(str2, &max2, " \t", &ptr2); // t is a null pointer
		wprintf(L"%ls",t);
	t = wcstok_s(NULL, &max1, "#,", &ptr1); // t points to the token "c"
		wprintf(L"%ls",t);
	t = wcstok_s(NULL, &max1, "?", &ptr1); // t is a null pointer
		wprintf(L"%ls",t);
	return printf("K.3.9.2.3.1 The wcstok_s function  \n" );
}
// output may be