#include <stdio.h> /* fprintf(3), stderr, stdin, stdout */
#if !defined EX_OK || !defined EX_USAGE
#	include <sysexits.h>
#endif

int main(int argc, char *argv[]){
	CHARACTER c; /* iterating over character stream */

	if(argc > 1){
		fprintf(stderr, "Usage: %s\n", argv[0]);
		return EX_USAGE;
	}


	while((c = GETC(stdin)) != ENDOFFILE)
		PUTC(ISVALID(c) ? CONV(c) : c, stdout);

	return EX_OK;
}