#include <iostream>
using namespace std;

// The how-to guide. Called first inside int main()
void guide()
{
    cout << "Welcome to Beach Coffee Sells Counter\n\n";
    cout << "======================================================\n\n";
    cout << "How to guide:\nBasically follow the instructions given.\nBut well, here's the full guide\n\n";
    cout << "1. Type in the coffee size that's being ordered\n";
    cout << "2. Type in the amount of coffee that's being ordered\n";
    cout << "3. If there's any other order, type in 1. Otherwise, type in 0\n";
    cout << "4. You can see cups sold, coffee sold, and money earned by typing in 1, 2, or 3.\n";
    cout << "5. You can exit the program by typing in 1 or type 2 to order again (back to order menu)\n\n";
    cout << "======================================================\n\n";
}

// Function for choosing size, amount, and cost of each transaction.
void sellCoffee(int (&arr)[3])
{
    int arr1[]={0,0,0};
    int n,m,q;
    const float costsmall=1.75, costmed=1.9, costlarge=2;
    float total;
    cout << "Type 1 for small coffee (9oz, $1.75),\nType 2 for medium coffee (12oz, $1.90),\nType 3 for large coffee(15oz, $2.00).\n\n";
    loop:
    cout << "Coffee Size? "; cin >> n;
    if((n==1) || (n==2) || (n==3))
    cout << "";
    else
    {
        cout << "Try again.\n\n";
        goto loop;
    }
    cout << "Amount to order? "; cin >> m;
    switch(n)
    {
        case 1:
            arr1[0]+=m;
            arr[0]+=m;
            break;
        case 2:
            arr1[1]+=m;
            arr[1]+=m;
            break;
        case 3:
            arr1[2]+=m;
            arr[2]+=m;
            break;
    }
    cout << "Is there anything else? (1) No  (2) Yes  ";
    loop1:
    cin >> q;
    switch(q)
    {
        case 1:
            break;
        case 2:
            goto loop;
            break;
        default:
            goto loop1;
            break;
    }
    total = costsmall*arr1[0] + costmed*arr1[1] + costlarge*arr1[2];
    cout << "That will be $" << total << endl << endl;
}

// Function to show each cup size sold
void displayCupSizeSold(int (&arr)[3])
{
    cout << endl;
    cout << "Subtotal " << arr[0] << " small size cup(s) sold.\n\n";
    cout << "Subtotal " << arr[1] << " medium size cup(s) sold.\n\n";
    cout << "Subtotal " << arr[2] << " large size cup(s) sold.\n\n";
}

// Function to show (in oz) how many coffee sold
void displayCoffeeSold(int (&arr)[3])
{
    const int small=9,medium=12,large=15;
    int sum = arr[0]*small + arr[1]*medium + arr[2]*large;
    cout << "Total " << sum << "oz coffee sold.\n\n";
}

// Function to show the total earning so far
void moneyMade(int (&arr)[3],float &mon)
{
    const float costsmall=1.75, costmed=1.9, costlarge=2;
    mon += arr[0]*costsmall + arr[1]*costmed + arr[2]*costlarge;
    cout << "Money made: $" << mon << "\n\n";
}

int main()
{
    float money;
    int cups[]={0,0,0},x,n;

    loop:
    guide();

    sellCoffee(cups);

    loop1:
    cout << "What do you want to do now? (1) Display cups sold  (2) Display coffee sold  (3) Show income  (4) Other  ";
    loop2:
    cin >> n;
    switch(n)
    {
        case 1:
            displayCupSizeSold(cups);
            goto loop1;
            break;
        case 2:
            displayCoffeeSold(cups);
            goto loop1;
            break;
        case 3:
            moneyMade(cups,money);
            goto loop1;
            break;
        case 4:
            cout << endl;
            break;
        default:
            goto loop2;
            break;
    }


    cout << "Do you want to exit the program? (1) Yes  (2) No (back to order menu)  "; cin >> x;
    switch(x)
    {
        case 1:
            break;
        case 2:
            system ("CLS"); // CLS to clear screen for every transaction
            goto loop;
            break;
    }
}