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Text File  |  1984-09-28  |  136b  |  10 lines
  1. /*    return true if input character is a a control character
  2. */
  3.  
  4. iscntrl(c)
  5. unsigned char c;
  6. {
  7.  
  8.   return (0177==c || c<=037);
  9. }
  10.