54 #define	C	((c = getc(infile)) == EOF ? eof() : \
56 #define	C1	((c = getc(infile)) == EOF ? eof() : c)
106 static FILE *infile;  variable
171 		infile = stdin;  in main()
173 		infile = opn(argv[optind++]);  in main()
174 	files[0] = infile;  in main()
193 	while ((c = getc(infile)) != rdelim) {  in skeqn()
197 			while ((c = getc(infile)) != '"') {  in skeqn()
201 					if ((c = getc(infile)) == EOF) {  in skeqn()
233 	if (infile != stdin)  in eof()
234 		(void) fclose(infile);  in eof()
236 		infile = *--filesp;  in eof()
238 		infile = opn(argv[optind++]);  in eof()
499 				infile = *++filesp = opn(fname);  in comline()
510 			if (infile != stdin) {  in comline()
511 				(void) fclose(infile);  in comline()
513 			infile = *filesp = opn(fname);  in comline()
730 			(void) ungetc(c, infile);  in backsl()