void cmd_roll()
{
   // Find the two numbers on either side of "d".
    if (prompt_arguments.size() <= 1)
    {
        cout << endl <<"Please enter the dice to roll... ex: 1d4";
        prompt();
    }
    else
    {
        string die1;
        string die2;
        int result = 0;
        stringstream convert;
        int maxscore = 0;

        string full = prompt_arguments[1];
        int dpos = full.find("d");
        full.replace(dpos, 1, " ");
        int spacepos = full.find(" ");
        die1 = full[0];
        die2 = full[2];
        convert.clear();
        convert << die2;
        convert >> maxscore
        // Begin Dice Rolling
        // Seed random number generator with time.

 
        result += (rand() % maxscore) + 1;

        cout << endl << "Rolled " << die1 << "d" << die2 << ": " << result;
    }
}