RomanType - implementation file

/*Matt Short
CPSC 131
Purpose: Contains the implementation of
the class members for RomanType
*/
//IMPLEMENTATION FILE
#include <iostream>
#include "RomanType.h"
using namespace std;
RomanType::RomanType()
{
};
void RomanType::getArabicNumber()
{
    cout<<"Please enter an Arabic Number: ";
    cin>>arabicInput;
}
void RomanType::getRomanNumber()
{
    cout<<"Please enter a Roman Numeral: ";
    cin>>romanInput;
}
void RomanType::printRoman()
{
    cout<<romanInput<<endl;
}
void RomanType::printArabic()
{
    cout<<arabicInput<<endl;
}
void RomanType::convertToRoman()
{
    int arabic2 = arabicInput;//a copy of arabicInput
    string romanLets[] = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"};//array of roman numerals
    int arabicNums[] = {1000,  900, 500,  400, 100,   90,  50,   40,  10,    9,   5,    4,   1};//matching array of arabic numbers
    string romanString = "";//string to hold roman numerals
    for(int i=0;i<13;i++)//loop that writes roman numerals into romanString
    {
        while(arabic2>=arabicNums[i])
        {
            arabic2 -= arabicNums[i];
            romanString += romanLets[i];
        }
    }
    int len = romanString.size();//int that holds length of romanString
    for(int i=0;i<=len;i++)//loop that moves romanString into romanInput
    {
        romanInput[i]=romanString[i];
    }
    cout<<"Conversion complete."<<endl;
}
void RomanType::convertToArabic()
{
     int len = strlen(romanInput);//int that holds length of romanInput
     int number = 0;//int to hold value of roman numeral
     int i = 0;//counting variable
     int number2 = 0;//int to hold value of previous roman numeral
     int sum = 0;//int to hold total/total-thus-far in arabic numbers
     for (i=0;i<len;i++)
         {
             if (romanInput[i] == 'M' || romanInput[i] == 'm')
                 number = 1000;
             else if (romanInput[i] == 'D' || romanInput[i] == 'd')
                 number = 500;
             else if (romanInput[i] == 'C' || romanInput[i] == 'c')
                 number = 100;
             else if (romanInput[i] == 'L' || romanInput[i] == 'l')
                 number = 50;
             else if (romanInput[i] == 'X' || romanInput[i] == 'x')
                 number = 10;
             else if (romanInput[i] == 'V' || romanInput[i] == 'v')
                 number = 5;
             else if (romanInput[i] == 'I' || romanInput[i] == 'i')
                 number = 1;
             else
                 number = 0;

             if (number2 < number && number2!=0)
                 sum += number - number2*2;
             else
                 sum += number;
             number2 = number;
        }
     arabicInput=sum;
     cout<<"Conversion complete."<<endl;
}
RomanType::~RomanType()
{
};