148 	char *file_in = NULL, *file_out = NULL;  in main()  local
166 			file_out = argv[++i];  in main()
173 			file_out = argv[++i];  in main()
180 			file_out = argv[++i];  in main()
248 			perror(file_out);  in main()
260 		if (!file_in || !file_out) {  in main()
273 		fo = fopen(file_out, "wb");  in main()
275 			perror(file_out);  in main()
285 			perror(file_out);  in main()
347 		printf("pack %s success! \n", file_out);  in main()
353 			perror(file_out);  in main()
356 		if (!file_in || !file_out) {  in main()
369 		fo = fopen(file_out, "wb");  in main()
371 			perror(file_out);  in main()
384 		printf("unpack %s success! \n", file_out);  in main()