#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

string getString();
int getKey();
string rotateWord(string myString, int key);
string derotateWord(string myString, int key);
string rotateChar(string myString, int key);
string derotateChar(string myString, int key);

int main()
{

    bool cont = false;
    string myString;
    int key, menu;

    do
    {

        cout << "1.Rotate Word" << endl;
        cout << "2.Derotate Word" << endl;
        cout << "3.Rotate Character" << endl;
        cout << "4.Derotate Character" << endl;
        cout << "5.Exit" << endl;

        cin >> menu;

        switch(menu)
        {

        case 1:

            break;
        case 2:

            break;
        case 3:
            myString = getString();
            key = getKey();
            rotateChar(myString, key);
            cout << "Here is your derotated word: " << myString << endl;
            break;
        case 4:
            myString = getString();
            key = getKey();
            derotateChar(myString, key);
            cout << "Here is your derotated word: " << myString << endl;
            break;
        case 5:
            cont = true;
            cout << "Goodbye!";
            break;
        default:
            cout << "You did not enter a valid menu option." << endl;
            break;

        }


    }
    while(!cont)
    {



    }


    return 0;

}

string getString()
{

    string myString;

    cout << "What word would you like to encrypt?" << endl;
    cin >> myString;

    return myString;

}

int getKey()
{

    int key;

    cout << "How many times do you want to rotate your word?" << endl;
    cin >> key;

    return key;

}

string rotateWord(string myString, int key)
{

    key = key % myString.length();

    char temp;

    for(int j = 0; j < key; j++)
    {

        temp = myString[myString.length() - 1];

        for(int i = myString.length() - 1; i >= 0; i--)
        {

            if ((i - 1) > 0)
            {

                myString[i] = myString[i - 1]

            }
            else
            {

                myString[i] = temp;

            }

        }

    }

    return myString;

}

string derotateWord(string myString, int key)
{


    return myString;

}

string rotateChar(string myString, int key)
{

    for(int i = 0; i < myString.length(); i++)
    {

        myString[i] = myString[i] + key;

    }

    return myString;


}

string derotateChar(string myString, int key)
{

    for(int i = 0; i < myString.length(); i++)
    {

        myString[i] = myString[i] - key;

    }

    return myString;

}