int main()

in src/apps/miscapps/h3ToGeoBoundaryHier.c [98:173]
62 lines of code
11 McCabe index (conditional complexity)

int main(int argc, char *argv[]) {
    int res;
    H3Index parentIndex = 0;

    Arg helpArg = ARG_HELP;
    Arg resArg = {.names = {"-r", "--resolution"},
                  .scanFormat = "%d",
                  .valueName = "res",
                  .value = &res,
                  .helpText =
                      "Resolution, if less than the resolution of the parent "
                      "only the parent is printed. Default the resolution of "
                      "the parent."};
    Arg parentArg = {
        .names = {"-p", "--parent"},
        .scanFormat = "%" PRIx64,
        .valueName = "parent",
        .value = &parentIndex,
        .required = true,
        .helpText = "Print cell boundaries descendent from this index."};
    Arg kmlArg = ARG_KML;
    DEFINE_KML_NAME_ARG(userKmlName, kmlNameArg);
    DEFINE_KML_DESC_ARG(userKmlDesc, kmlDescArg);

    Arg *args[] = {&helpArg, &resArg,     &parentArg,
                   &kmlArg,  &kmlNameArg, &kmlDescArg};
    const int numArgs = 6;
    const char *helpText = "Print cell boundaries for descendants of an index";

    if (parseArgs(argc, argv, numArgs, args, &helpArg, helpText)) {
        return helpArg.found ? 0 : 1;
    }

    if (res > MAX_H3_RES) {
        printHelp(stderr, argv[0], helpText, numArgs, args,
                  "Resolution exceeds maximum resolution.", NULL);
        return 1;
    }

    if (!H3_EXPORT(h3IsValid)(parentIndex)) {
        printHelp(stderr, argv[0], helpText, numArgs, args,
                  "Parent index is invalid.", NULL);
        return 1;
    }

    int rootRes = H3_GET_RESOLUTION(parentIndex);

    if (kmlArg.found) {
        char *kmlName;
        if (kmlNameArg.found) {
            kmlName = strdup(userKmlName);
        } else {
            kmlName = calloc(BUFF_SIZE, sizeof(char));

            sprintf(kmlName, "Cell %" PRIx64 " Res %d", parentIndex,
                    ((res <= rootRes) ? rootRes : res));
        }

        char *kmlDesc = "Generated by h3ToGeoBoundaryHier";
        if (kmlDescArg.found) kmlDesc = userKmlDesc;

        kmlBoundaryHeader(kmlName, kmlDesc);

        free(kmlName);
    }

    // generate the points
    if (res <= rootRes) {
        doCell(parentIndex, kmlArg.found);
    } else {
        H3_SET_RESOLUTION(parentIndex, res);
        recursiveH3IndexToGeo(parentIndex, rootRes + 1, kmlArg.found);
    }

    if (kmlArg.found) kmlBoundaryFooter();
}