// filename:c2011-K-3-9-2-1-2-ex.c
// original examples and/or notes:
// 		(c) ISO/IEC JTC1 SC22 WG14 N1570, April 12, 2011
// 			C2011 K.3.9.2.1.2 The wcsncpy_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 1
#define __STDC_WANT_LIB_EXT1__ 1
#include <stdio.h>
#include <string.h>
#include <wchar.h>

int main(void)
{
/* ... */
wchar_t src1[100] = L"hello";
wchar_t src2[7] = {L'g', L'o', L'o', L'd', L'b', L'y', L'e'};
wchar_t dst1[6], dst2[5], dst3[5];
int r1, r2, r3;
r1 = wcsncpy_s(dst1, 6, src1, 100);
r2 = wcsncpy_s(dst2, 5, src2, 7);
r3 = wcsncpy_s(dst3, 5, src2, 4);
return printf("K.3.9.2.1.2 The wcsncpy_s function %d %d %d  \n",r1,r2,r3 );
}
// output may be