#include <iostream>

using namespace std;

bool hasSufficientFunds( float cost, float balance)

{

    return (cost <= balance);

}

//BEGIN

int main()

{

    char input; //user inputs
    int balance = 0; //amount of money inserted
    float minCost = 1.5; // min amount to make a purchase
    string voucherChoice = "Please Choose Your Dining Voucher: \n (1) $10, (2) $20, (3) $50, (4) $100 \n";
    string voucherBalance = "You've inserted: \n";
    string voucherMoreMoney = "Add more funds? (Y/N)";
    string foodMenu = "Please make a selection: \n (P)otato Chip $2.50, (H)am Burger $2.50, (C)hicken Rice , (B)rooklyn Pizza $4.50 \n";
    string drinkMenu = "Select your beverages: \n (A)quaVenna $1.50, (B)epsi $2.00, (C)ool Cola $2.00, (G)atorade $2.25, (N)o Beverage \n";
    string insufficientFunds = "Insufficient amount to make selection \n";
    string changeProvided = "Enjoy your meals \n";

//greeting for venting machine
    cout<<"=====================================================" <<endl;
    cout<<"============ Welcome to the Dining Hall =============" <<endl;
    cout<<"=====================================================" <<endl;

    while( true )

{

    cout<< voucherChoice;
    cin>> input;

    if (input == '1')
        balance += 10.00;

    else if  (input == '2')
        balance += 20.00;

    else if  (input == '3')
        balance += 50.00;

    else if  (input == '4')
        balance = balance += 100.00;

    cout<< voucherBalance << balance << endl;

    cout<< voucherMoreMoney;
    cin>> input;

    if(input == 'N' || input == 'n')

    break;

}
//balance check

    if( balance == 0)

    {

        cout<< insufficientFunds << endl;

        return 0;

    }


//Voucher meal menu loop

    minCost = 2.5;

    while( true )

{

    if (balance < minCost)

    break;


    cout<< foodMenu;
    cin>> input;

        if(input == 'P' || input == 'p')

            balance -= 2.5;

        if(input == 'H' || input == 'h')

            balance -= 5.5;

        if(input == 'C' || input == 'c')

            balance -= 5.5;

        if(input == 'B' || input == 'b')

            balance -= 4.5;

        if(input == 'N' || input == 'n')

            balance -= 0.0;

        cout<< "Coins/bills: " << balance << endl;


        if( balance >= minCost)

        {


            cout<< voucherMoreMoney;

            cin>> input;


            if(input == 'N' || input == 'n')

            break;

}
}

//Voucher drink menu Loop


    minCost = 1.5;

    while( true )

{

        if( balance < minCost )

        {

//take change

            break;

        }


        cout<< drinkMenu;
        cin>> input;

        if(input == 'A' || input == 'p')

            balance -= 1.5;

        if(input == 'B' || input == 'h')

            balance -= 2.0;

        if(input == 'C' || input == 'c')

            balance -= 2.0;

        if(input == 'G' || input == 'b')

            balance -= 2.25;

        if(input == 'N' || input == 'n')

            balance -= 0.0;

//has enough funds
    int cost = 0;


        if( hasSufficientFunds(cost, balance))

        {

            balance -= cost;

        }

        else

        {

//error message

            cout<< insufficientFunds << balance << endl ;

            return 0;

        }


        cout<< "Coins/bills: " << balance << endl;


        if( balance < minCost )

        {

//can't buy anything so take change

        break;

        }


        cout<< "Would you like more drinks (Y/N)? " ;

        cin>> input;


        if(input == 'N' || input == 'n')

            break;


    }



//your change is

    cout<< "Take your change: " << balance << endl;



//END
    cout<< changeProvided;
}