parse command line arguments

ReadOpts.cc

int ReadOpts(int argc, char* argv[]){
    try {
        const char *usage = "test options parser";
        kaldi::ParseOptions po(usage);
        bool use_i = false;
        po.Register("use-i", &use_i, "use i bool");
        po.Read(argc, argv);
        cout<<po.NumArgs()<<endl;
        if (po.NumArgs() != 1) {
            po.PrintUsage();
            exit(1);
            return(-1);
        }
        std::string fn = po.GetArg(1);
        cout<<"ARG 1: "<<fn<<endl;
        return(0);
    } catch(const std::exception& e) {
        std::cerr << e.what();
        return -1;
    }
}