#include <iostream>
#include <string>

using namespace std;

void rtod(char expession[], int &roman1, int &roman2, char &opperator);

int main()
{
    char expression[25] = "                        ";
    char opperator;
    int roman1, roman2;

    cout << "Welcome to my roman numeral calculator!!" << endl;
    cout << "********************************************\nTo use the calculator..." << endl;
    cout << "Simply enter the first number followed by the opperator followed by the other opperator!" << endl;
    cout << "Notes: order of letters does not matter! Enter 0 to exit. Case does not matter." << endl;
    cout << "Addition: +\tSubtraction: -\tMultiplication: *" << endl;
    cout << endl;

    while(expression[0] != '0')
    {
        cout << "Ready for input..." << endl;
        cin >> expression;

        rtod(expression, roman1, roman2, opperator);

        cout << endl;
        cout << roman1 << " " << roman2 << endl;

    }

    
    return 0;
}

void rtod(char expression[], int &roman1, int &roman2, char &opperator)
{
    int counter = 0;
    roman1 = 0;
    roman2 = 0;

    while(expression[counter] != '*' || expression[counter] != '+' || expression[counter] != '-')
    {
        switch(expression[counter])
        {
            case 'I':
            case 'i':
                roman1 = roman1 + 1;
            case 'V':
            case 'v':
                roman1 = roman1 + 5;
            case 'X':
            case 'x':
                roman1 = roman1 + 10;
            case 'L':
            case 'l':
                roman1 = roman1 + 50;
            case 'C':
            case 'c':
                roman1 = roman1 + 100;
            case 'D':
            case 'd':
                roman1 = roman1 + 500;
            case 'M':
            case 'm':
                roman1 = roman1 + 1000;
        }

        counter++;
    }

    opperator = expression[counter];

    while(expression[counter] != '\0')
    {
        switch(expression[counter])
        {
            case 'I':
            case 'i':
                roman2 = roman2 + 1;
            case 'V':
            case 'v':
                roman2 = roman2 + 5;
            case 'X':
            case 'x':
                roman2 = roman2 + 10;
            case 'L':
            case 'l':
                roman2 = roman2 + 50;
            case 'C':
            case 'c':
                roman2 = roman2 + 100;
            case 'D':
            case 'd':
                roman2 = roman2 + 500;
            case 'M':
            case 'm':
                roman2 = roman2 + 1000;
        }

        counter++;
    }
}