c++ - Calling applications with get_opt -


i trying figure out. have not been able call small program following options:

static struct option long_options[] = {     {"t", 2, 0, 0 },     {"m", 2, 0, 1 },     {0,0,0,0}   };    while (1) {     int oi = 0;     int c =  getopt_long( argc, argv, "", long_options, &oi );     if ( c == -1) break;     switch( c ) {     case 0:        tenant = atoi(optarg);       break;     case 1:        mantle = atoi(optarg);     default:       return -1;     }   }

how supposed call program? have tried

./myprogram -t 10 , ./myprogram --t 10

what "" in getopt_long mean?


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