25 static const char *filename;  variable
92 	    die("%s: end of file\n", filename);  in get_number()
98 		    die("%s: end of file\n", filename);  in get_number()
114 	    die("%s: end of file\n", filename);  in get_number()
133     fp = fopen(filename, "r");  in read_image()
135 	die("Cannot open file %s: %s\n", filename, strerror(errno));  in read_image()
140 	die("%s is not a PNM file\n", filename);  in read_image()
154 		"Use pnmnoraw(1) to convert it to ASCII PNM\n", filename);  in read_image()
157 	    die("%s is not a PNM file\n", filename);  in read_image()
242     fprintf(out, " *  It was automatically generated from %s\n", filename);  in write_header()
493     filename = argv[optind];  in main()