#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
 
int main(void)
{
   FILE    *stream;
   wchar_t  wcs[100];
   int      compt;
   int      *lect_ligne;
 
   if (NULL == (stream = fopen("fgetws.txt", "r"))) {
      system("PAUSE");
      printf("Unable to open: \"fgetws.txt\"\n");
      exit(1);
   }
 
   compt = 0;
   errno = 0;
   while (1) {
      lect_ligne = fgetws(wcs, 100, stream);
      compt ++;
      if (NULL == lect_ligne) {
         if (EILSEQ == errno) {
            printf("An invalid wide character was encountered.\n");
            system("PAUSE");
            exit(1);
         }
         else if (feof(stream)) {
                 printf("End of file reached.\n");
                 system("PAUSE");
                 exit(1);
                 }
              else {
                 perror("Read error.\n");
                 }
      }
      printf("compt = %d\n", compt);
      printf("wcs = \"%ls\"\n", wcs);
      system("PAUSE");
   }
   fclose(stream);
   return 0;
}

   /************************************************************
      Assuming the file fgetws.dat contains:
 
      This test string should not return -1
 
      The output should be similar to:
 
      wcs = "This test string should not return -1"
   ************************************************************/