friendshipalgorithm

// Das Hauptprogramm
int main(){
    int control = 0;            // First state
    int nextYes, nextNo;        // To decide the state from the answer
    bool getInput = true;       // So we can skip yes / no from the user to show different paths
    string userInput;           // The cin from the user is written to this string

    cout << "The friendship algortihm!" << endl << endl;
    while (control != 99){

        switch (control) {
        case 0:
            cout << "Place phone call!" << endl;
            cout << "Is someone at home?" << endl;
            nextYes = 2;
            nextNo = 1;
            break;
        case 1:
            cout << "Leave message!" << endl;
            cout << "Wait for callback.." << endl;
            getInput = false;
            control = 0;
            break;
        case 2:
            cout << "Hey would you like to share a meal some time?" << endl;
            nextYes = 3;
            nextNo = 4;
            break;
        case 3:
            cout << "Dine together!" << endl;
            control = 99;
            getInput = false;
            break;
         case 4:
            cout << "Do you enjoy a hot beverage?" << endl;
            nextYes = 5;
            break;
         case 5:
            cout << "What would you like to drink?" << endl;
            bool correctInput = false;

            while (!correctInput)   // Loop while NOT a correct input ("!" means not)
            {
                cout << "Choose between tea, coffee and cocoa!" << endl;
                cin >> userInput;
                if (userInput == "tea")
                    correctInput = true;
                else if (userInput == "coffee")
                    correctInput = true;
                else if (userInput == "cocoa")
                    correctInput = true;
            }
            cout << "Have " << userInput << endl;
            control = 99;
            break;


        // If we need a new input we ask for it
        if (getInput)
        {
            cin >> userInput;
            if (userInput == "yes")
            {
                control = nextYes;
            }
            else if (userInput == "no")
            {
                control = nextNo;
            }
            else
                cout << "Please write yes or no!" << endl;
        }

        getInput = true;    // Enables input for next question if needed
    }
    }

    cout << "Begin friendship! <3" << endl;     // The goal <3

}