/* purify.c -- filter stdin replacing any characters with ASCII code > 127
   by surrounding them with "<<" and ">>".
   This code is dedicated to George Frederic Handel  HWV 56, Mvt. 7
   RJBotting
   Started: 
	Wed Dec 20 08:40:24 PST 2006
	Based on impure.c
*/
#include <stdio.h>

#define DEL 127

main(int argc, char *argv[])
{ int c; 
  if(1!=argc){
	fprintf(stderr,"Usage: impure <file\n");
            exit(1);
        }

  while( (c=getchar())!=EOF){
	if(c>DEL){
		printf("<<%c>>", (char)c);
	}else{
		putchar((char)c);
	}
  }/*while*/

  exit(0);
}