30         exit(0);  in main()
32       exit(1);  in main()
40       exit(1);  in main()
48       exit(1);  in main()
56       exit(1);  in main()
64       exit(1);  in main()
77       exit(1);  in main()
85       exit(1);  in main()
93       exit(1);  in main()
100       exit(1);  in main()
106       exit(1);  in main()
109   exit(0);  in main()
116   exit(0);  in main()