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C# 在课堂上寻求指导_C#_Class_Methods - Fatal编程技术网

C# 在课堂上寻求指导

C# 在课堂上寻求指导,c#,class,methods,C#,Class,Methods,我目前正在从事一个项目,我被要求为一家小企业(在这里是一家小电影院)制作一个程序,在那里我可以记录和打印各种产品和客户的收据 到目前为止,我拥有的是一系列代码,记录客户想要订购什么 我如何制作另一个类来存储和计算价格,并向控制台打印收据的样子 我不是问答案,只是一些指导 namespace RecieptApp { class Reciept { public void Main() { double DoubleDisco

我目前正在从事一个项目,我被要求为一家小企业(在这里是一家小电影院)制作一个程序,在那里我可以记录和打印各种产品和客户的收据

到目前为止,我拥有的是一系列代码,记录客户想要订购什么

我如何制作另一个类来存储和计算价格,并向控制台打印收据的样子

我不是问答案,只是一些指导

namespace RecieptApp
{
    class Reciept
    {
        public void Main()
        {
            double DoubleDiscount;
            int IntFoodOrdered;
            int IntDrinkOrdered;
            double DoubleFoodSize;
            double DoubleDrinkSize;
            int ACustomer;
            int BCustomer;
            string CustomerDescription;
            string FoodDescription;
            string DrinkDescription;

            Console.Write("How many adults: ");
            ACustomer = Console.Read();
            Console.Write("How many kids: ");
            BCustomer = Console.Read();

            while (true)
            {
                Console.Write("Are you a government employee, current or retired military, or classified disabled? (Please answer yes or no) :");
                string input1 = Console.ReadLine();
                if (input1 == "yes")
                {
                    DoubleDiscount = .15;
                    CustomerDescription = "Special Discount";
                }
                else
                {
                    break;
                }
            }

            while (true)
            {
                Console.WriteLine("Would you like to order some popcorn?");
                string FoodInput1 = Console.ReadLine();
                if (FoodInput1 == "yes")
                {
                    Console.WriteLine("How many would you like?");
                    int.TryParse(Console.ReadLine(), out IntFoodOrdered);
                    while (true)
                    {
                        Console.WriteLine("And would you like that in small or large?");
                        string FoodInput2 = Console.ReadLine();
                        if (FoodInput2 == "small")
                        {
                            DoubleFoodSize = 3.75;
                            FoodDescription = "S";
                        }
                        else
                        {
                            DoubleFoodSize = 6.75;
                            FoodDescription = "L";
                        }
                    }
                }
                else
                {
                    break;
                }
            }

            while (true)
            {
                Console.WriteLine("Would you like to order a drink?");
                string DrinkInput1 = Console.ReadLine();
                if (DrinkInput1 == "yes")
                {
                    Console.WriteLine("How many would you like?");
                    int.TryParse(Console.ReadLine(), out IntDrinkOrdered);
                    while (true)
                    {
                        Console.WriteLine("And Would you like that in small or large?");
                        string DrinkInput2 = Console.ReadLine();
                        if (DrinkInput2 == "small")
                        {
                            DoubleDrinkSize = 2.75;
                            DrinkDescription = "S";
                        }
                        else
                        {
                            DoubleDrinkSize = 5.75;
                            DrinkDescription = "L";
                        }
                    }

                }
            }
            //This is where the other class would go in
            //I just dont know how to go about it so that it would minimized the amount of code I have //to write

            RecieptList Items = new RecieptList();

            Items.AddProduct(ACustomer);
            Items.AddProduct(BCustomer);
            Items.AddProduct(CustomerDescription);
            Items.AddProduct(FoodDescription);
            Items.AddProduct(DrinkDescription);

        }
    }
}

如果您想要创建一个类,那么您可能需要创建一个表示通用产品的类,然后使用一个方法从该产品获取详细信息

既然我没有更好的事要做,我就把你变成了一个傻瓜。它过于简化了,但是它满足了您对非常特定的情况的需求,并且它使用了一个对象

我相信你足够聪明,可以使用一些概念来满足你的特定需求

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{

    public class Product
    {
        public string description;
        public double price;
        //normally you want to use eitehr an int for price(representing cents) or a decimal type, instead of double
        //just using a double here for the sack of simplicity
        // you'll also want to use properties instead of variable fields, but i'm using variable fields for simplicity

        // constructor
        public Product(string description, double price)
        {
            this.description = description;
            this.price = price;
        }

        public string GetDetailLine()
        {
            // google "String.Format" for more information,
            // basically it replaces things in the {0} and {1}, with the other parameters
            // the ":c" in {1:c} part means format as currency
            return String.Format("You ordered {0}.  It costs: {1:c}", description, price);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            List<Product> products = new List<Product>();


            Console.Write("Do You Want a Soda?   ");
            string input = Console.ReadLine();
            //the .ToUpper() part makes it upper case
            if (input.ToUpper() == "YES")
            {
                Product soda = new Product("soda", 2.50);
                products.Add(soda);
            }

            double total = 0; 
            for(int i = 0; i<products.Count; i++)
            {
                Console.WriteLine(products[i].GetDetailLine());
                total += products[i].price;
            }

            //you can also use Console.Writeline like String.Format
            Console.WriteLine("Your Total is:  {0:c}", total);


            // this is just to pause in-case you're debugging from visual studio
            Console.ReadLine();
        }
    }
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
命名空间控制台应用程序2
{
公共类产品
{
公共字符串描述;
公开双价;
//通常,您希望使用整数表示价格(表示美分)或十进制类型,而不是双精度
//为了简单起见,这里只使用了一个double
//您还需要使用属性而不是变量字段,但为了简单起见,我使用变量字段
//建造师
公共产品(字符串描述,双倍价格)
{
this.description=描述;
这个价格=价格;
}
公共字符串GetDetailLine()
{
//谷歌“String.Format”获取更多信息,
//基本上,它用其他参数替换{0}和{1}中的内容
//{1:c}部分中的“:c”表示货币形式
return String.Format(“您订购了{0},成本:{1:c}”,描述,价格);
}
}
班级计划
{
静态void Main(字符串[]参数)
{
列表产品=新列表();
控制台。写下(“你想要苏打水吗?”);
字符串输入=Console.ReadLine();
//.ToUpper()部分使用大写形式
if(input.ToUpper()=“是”)
{
产品苏打=新产品(“苏打”,2.50);
添加(苏打水);
}
双倍合计=0;

对于(int i=0;i('e'之前的i',除了'c'之后的i'),您至少需要添加一个'price'变量,该变量随每次购买一起添加到。这不需要在另一个类中。您可以查看一些想法。如果您能掌握它,它将为类、对象和方法提供漂亮的指南。:-)抱歉,我是C#的新手,但对于这种型号,如果我想使用多个产品,我如何才能将其添加到列表中?@NghiaLe只需使用
products.add()
method againI尝试过Console.Write(“多少成年人?”);int.TryParse(Console.ReadLine(),out AdultTicket);产品成人票=新产品(“成人票”,7.75);产品。添加(成人票);但调试时不允许我继续。@n首先,代码更适合您的问题,而不是注释。其次,adultTicket在声明时不大写,但在使用时大写。我感谢您的患者Sam,但日志中说“Argument1:无法从“int”转换为”ConsoleApplication2.Product“。我将成人票声明为int,以统计订购了多少张票。我这样问是因为我想对所有的产品都这样做。