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#include 
#include 

int main(void)
{
   int wc;

   for (wc=0; wc <= 255; wc++) {
      printf("%3d", wc);
      printf(" %5c ", wc);
      printf("%2s", iswcntrl(wc)  ? "X"  : "-");

      putchar('n');
   }

   return 0;
}