How can I have getopt() support bundle of arguments and single character arguments

Question

I want to be able to support commands such as:

• ./myProgram -f required_arg1 -v required_arg2

and

• ./myProgram -fv required_arg1 required_arg2

Where required_arg1 belongs to -f and required_arg2 belongs to -v in both cases.

When the code below runs with the following command: ./myProgram -fv required_arg1 required_arg2, v is instantly the argument to -f, but I want them to be independent of each other, but have their own optargs.

int opt;
int fflag = 0;
int iflag = 0;

while ((opt = getopt(argc, argv, "f:v:i:")) != -1) {        
    switch (opt) {
        case 'f':

            if (fflag) {
                cerr << argv[0] << ": cannot have more than one -f in same command.\n";
                return false;
            }
            else {
                fflag = 1;
            }
            
            if (fflag && iflag) {
                cerr << argv[0] << ": cannot have -i and -f in the same command.\n";
                return false;
            }
            
            cout << "arg for -f: " << optarg << "\n";
            break;
        case 'i':
            iflag = 1;

            if (fflag && iflag) {
                cerr << argv[0] << ": cannot have -i and -f in the same command.\n";
                return false;
            }

            cout << "arg for -i: " << optarg << "\n";
            break;
        case 'v':
            cout << "arg for -v: " << optarg << "\n";
            break;
        default:
            break;
    }
}