用户输入循环并添加所有输入

Question

我需要获取所有用户输入产品的总数，但我做不到。我需要让用户选择产品及其数量，然后询问用户是否愿意添加更多产品或付款。用户将再次输入产品及其数量。之后程序会再次询问是否添加或支付。当用户选择支付时，它应该输出产品的总金额。最后程序会询问用户是否想再次使用该程序，如果没有，它将退出。

int choice, quanti, decide, total, price;
string w = "WELCOME ";
Console.SetCursorPosition((Console.WindowWidth - w.Length) / 2, Console.CursorTop);  // for setting string output on center top
Console.WriteLine(w);
Console.WriteLine("");
System.Threading.Thread.Sleep(2000); //time delay

string p = "HERE'S OUR MERCHANDISES! ";
Console.SetCursorPosition((Console.WindowWidth - p.Length) / 2, Console.CursorTop);  // for setting string output on center top
Console.WriteLine(p);
System.Threading.Thread.Sleep(2000);//time delay

string[] products = { "[1]BLACKPINK Lightstick ", "[2]DREAMCATCHER Seasons Greetings", 
                        "[3]RED VELVET Summer Package"};

for (int g = 0; g < products.Length; g++)
{
    Console.WriteLine(products[g]);
}

for (int i = 0; i < products.Length; i++)
{
    Console.Write("Pick your product: ");
    choice = int.Parse(Console.ReadLine());
    switch (choice)
    {
        case 1:
            Console.WriteLine("BLACKPINK Lightstick 1500php");

            break;
        case 2:
            Console.WriteLine("DREAMCATCHER Seasons Greetings 920php");

            break;
        case 3:
            Console.WriteLine("RED VELVET Summer Package 980php");

            break;
    }
    Console.WriteLine("Quantity of product: ");
    quanti = int.Parse(Console.ReadLine());
    System.Threading.Thread.Sleep(2000);//time delay
    Console.WriteLine("[1] Add more products \t [2] Pay: ");
    decide = int.Parse(Console.ReadLine());

    if (decide == 2)
    {
        decide++;
        if (choice == 1)
        {
            price = 1500;
        }
        else if (choice == 2)
        {
            price = 920;
        }

        else if (choice == 3)
        {
            price = 980;
        }
        else
        {
            break;
        }

        total = choice * price * quanti;
        Console.Write(total);
    }
    else
    {
        Console.Write("Pick your product: ");
        choice = int.Parse(Console.ReadLine());
        switch (choice)
        {
            case 1:
                Console.WriteLine("BLACKPINK Lightstick 1500php");
                price = 1500;
                break;
            case 2:
                Console.WriteLine("DREAMCATCHER Seasons Greetings 920php");
                price = 920;
                break;
            case 3:
                Console.WriteLine("RED VELVET Summer Package 980php");
                price = 700;
                break;

        }
        Console.WriteLine("Quantity of product: ");
        quanti = int.Parse(Console.ReadLine());
        System.Threading.Thread.Sleep(2000);//time delay
        Console.WriteLine("[1] Add more products \t [2] Pay: ");
        decide = int.Parse(Console.ReadLine());
        if (decide == 2)
        {
            if (choice == 1)
            {
                price = 1500;
            }
            else if (choice == 2)
            {
                price = 920;
            }
            else if (choice == 3)
            {
                price = 980;
            }
            else
            {
                break;
            }

            total = price * quanti;
            Console.Write(total);
        }
    }
}

Answer 1

检查这是否是您所期望的。

int choice, quanti, decide, total, price;
        while (true)
        {
            Console.Clear();
            string w = "WELCOME ";
            Console.SetCursorPosition((Console.WindowWidth - w.Length) / 2, Console.CursorTop);  // for setting string output on center top
            Console.WriteLine(w);
            Console.WriteLine("");
            System.Threading.Thread.Sleep(2000); //time delay

            string p = "HERE'S OUR MERCHANDISES! ";
            Console.SetCursorPosition((Console.WindowWidth - p.Length) / 2, Console.CursorTop);  // for setting string output on center top
            Console.WriteLine(p);
            System.Threading.Thread.Sleep(2000);//time delay

            string[] products = { "[1]BLACKPINK Lightstick ", "[2]DREAMCATCHER Seasons Greetings",
                    "[3]RED VELVET Summer Package"};

            for (int g = 0; g < products.Length; g++)
            {
                Console.WriteLine(products[g]);
            }

            Dictionary<int, int> ProductList = new Dictionary<int, int>();
            while (true)
            {
                {
                    Console.Write("Pick your product: ");
                    choice = int.Parse(Console.ReadLine());
                    switch (choice)
                    {
                        case 1:
                            Console.WriteLine("BLACKPINK Lightstick 1500php");
                            break;
                        case 2:
                            Console.WriteLine("DREAMCATCHER Seasons Greetings 920php");

                            break;
                        case 3:
                            Console.WriteLine("RED VELVET Summer Package 980php");

                            break;
                    }
                    Console.WriteLine("Quantity of product: ");
                    quanti = int.Parse(Console.ReadLine());
                    if (!ProductList.ContainsKey(choice))
                        ProductList.Add(choice, quanti);
                    else
                        ProductList[choice] += quanti;
                    System.Threading.Thread.Sleep(2000);//time delay
                    Console.WriteLine("[1] Add more products \t [2] Pay: ");
                    decide = int.Parse(Console.ReadLine());

                    if (decide == 2)
                        break;
                }
            }
            total = 0;
            foreach (int key in ProductList.Keys)
                switch (key)
                {
                    case 1:
                        total += ProductList[key] * 1500;
                        break;
                    case 2:
                        total += ProductList[key] * 920;
                        break;
                    case 3:
                        total += ProductList[key] * 980;
                        break;
                    default:
                        total += 0;
                        break;
                };
            Console.WriteLine("To Pay: " + total.ToString());

            Console.WriteLine("Another shopping? [1]Yes [2] No");
            choice = int.Parse(Console.ReadLine());
            if (choice == 2)
                break;
        }
    }

Answer 2

struct product
    {
        public string Name;
        public float Price;
        public float Discount;
    }
    static void Main(string[] args)
    {


        int choice, quanti, decide;
        float total;
        Dictionary<int,product> products=new Dictionary<int, product>();
        products.Add(1,new product() { Name = "BLACKPINK Lightstick", Price = 1500, Discount = 0 });
        products.Add(2, new product() { Name = "DREAMCATCHER Seasons Greetings", Price = 920, Discount = 0 });
        products.Add(3, new product() { Name = "RED VELVET Summer Package", Price = 980, Discount = 0 });
        while (true)
        {
            Console.Clear();
            string w = "WELCOME ";
            Console.SetCursorPosition((Console.WindowWidth - w.Length) / 2, Console.CursorTop);  // for setting string output on center top
            Console.WriteLine(w);
            Console.WriteLine("");
            System.Threading.Thread.Sleep(2000); //time delay
            string p = "HERE'S OUR MERCHANDISES! ";
            Console.SetCursorPosition((Console.WindowWidth - p.Length) / 2, Console.CursorTop);  // for setting string output on center top
            Console.WriteLine(p);
            System.Threading.Thread.Sleep(2000);//time delay
            foreach (int key in products.Keys)
            {
                Console.WriteLine("["+key.ToString()+"]"+products[key].Name);
            }

            Dictionary<int, int> ProductList = new Dictionary<int, int>();
            while (true)
            {
                {
                    Console.Write("Pick your product: ");
                    choice = int.Parse(Console.ReadLine());
                    Console.WriteLine(products[choice].Name+" "+products[choice].Price.ToString()+"php");
                    Console.WriteLine("Quantity of product: ");
                    quanti = int.Parse(Console.ReadLine());
                    if (!ProductList.ContainsKey(choice))
                        ProductList.Add(choice, quanti);
                    else
                        ProductList[choice] += quanti;
                    System.Threading.Thread.Sleep(2000);//time delay
                    Console.WriteLine("[1] Add more products \t [2] Pay: ");
                    decide = int.Parse(Console.ReadLine());

                    if (decide == 2)
                        break;
                }
            }
            total = 0;
            Console.WriteLine("------------------------------------");
            foreach (int key in ProductList.Keys)
            {
                total += products[key].Price*ProductList[key];
                Console.WriteLine(products[key].Name.PadRight(40,' ')+ProductList[key].ToString().PadLeft(3,' ')+ " * "+products[key].Price.ToString().PadLeft(10,' '));
                Console.WriteLine((products[key].Price * ProductList[key]).ToString().PadLeft(56, ' '));
            }
            Console.WriteLine(("To Pay: " + total.ToString()).PadLeft(56,' '));
            Console.WriteLine("Cash: ");
            var cash = float.Parse(Console.ReadLine());
            Console.WriteLine(("Change: " + (cash - total).ToString()).PadLeft(56, ' '));

            Console.WriteLine("Another shopping? [1]Yes [2] No");
            choice = int.Parse(Console.ReadLine());
            if (choice == 2)
                break;
        }
    }