while Loops, Conditions, and Blocks

        while ((c = getopt (argc, argv, "t:")) != -1) {
                switch (c) {
                case 't':
                        getstops(optarg);
                        break;
                case '?':
                default:
                        usage();
                        /* NOTREACHED */
                }
        }

Issues:

while statement
statement blocks
The perils of wrong indentation
for (ntp = nettab; ntp != NULL; ntp = ntp->next) {
    if (ntp->status == MASTER)
        rmnetmachs(ntp);
        ntp->status = NOMASTER;
}
assignment expressions
if ((line = input.readLine()) == null) /* [...] */
return errors;
Parentheses and evaluation precedence
API documentation

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