73 int	optind = 1;  variable
86 		if(optind >= argc ||  in getopt()
87 		   argv[optind][0] != '-' || argv[optind][1] == '\0')  in getopt()
89 		else if(strcmp(argv[optind], "--") == 0) {  in getopt()
90 			optind++;  in getopt()
93 	optopt = c = argv[optind][sp];  in getopt()
96 		if(argv[optind][++sp] == '\0') {  in getopt()
97 			optind++;  in getopt()
103 		if(argv[optind][sp+1] != '\0')  in getopt()
104 			optarg = &argv[optind++][sp+1];  in getopt()
105 		else if(++optind >= argc) {  in getopt()
110 			optarg = argv[optind++];  in getopt()
113 		if(argv[optind][++sp] == '\0') {  in getopt()
115 			optind++;  in getopt()