1  #include <stdio.h>
       2  #include <stdlib.h>
       3  
       4  int
       5  main (int argc, char *argv[])
       6  {
       7    wchar_t w[10];
       8    char c[10];
       9    int i;
      10    int lose = 0;
      11  
      12    i = mbstowcs (w, "bar", 4);
      13    if (!(i == 3 && w[1] == 'a'))
      14      {
      15        puts ("mbstowcs FAILED!");
      16        lose = 1;
      17      }
      18  
      19    i = mbstowcs (NULL, "bar", 4);
      20    if (!(i == 3 && w[1] == 'a'))
      21      {
      22        puts ("mbstowcs FAILED2!");
      23        lose = 1;
      24      }
      25  
      26    mbstowcs (w, "blah", 5);
      27    i = wcstombs (c, w, 10);
      28    if (i != 4)
      29      {
      30        puts ("wcstombs FAILED!");
      31        lose = 1;
      32      }
      33  
      34    if (mblen ("foobar", 7) != 1)
      35      {
      36        puts ("mblen 1 FAILED!");
      37        lose = 1;
      38      }
      39  
      40    if (mblen ("", 1) != 0)
      41      {
      42        puts ("mblen 2 FAILED!");
      43        lose = 1;
      44      }
      45  
      46    {
      47      int r;
      48      char c = 'x';
      49      wchar_t wc;
      50      char mbc[MB_CUR_MAX];
      51  
      52      if ((r = mbtowc (&wc, &c, MB_CUR_MAX)) <= 0)
      53        {
      54  	printf ("conversion to wide failed, result: %d\n", r);
      55  	lose = 1;
      56        }
      57      else
      58        {
      59  	printf ("wide value: 0x%04lx\n", (unsigned long) wc);
      60  	mbc[0] = '\0';
      61  	if ((r = wctomb (mbc, wc)) <= 0)
      62  	  {
      63  	    printf ("conversion to multibyte failed, result: %d\n", r);
      64  	    lose = 1;
      65  	  }
      66        }
      67  
      68    }
      69  
      70    puts (lose ? "Test FAILED!" : "Test succeeded.");
      71    return lose;
      72  }