在C＃中，当我输入royaltyRate时，我收到错误格式的错误消息。例：.25 [英] In C#, I get error message incorrect format when I enter the royaltyRate. Ex: .25

问题描述

嗨！

我是编程新手。

我为一个课程项目编写了这个简短的程序。用户输入书籍或杂志，销售数量，每单位价格和版税率。该计划返回总金额加上应付客户的特许权使用费总额。当我测试程序时，我无法进入royaltyRate。当我收到版税率错误格式的错误。我尝试了几种不同的输入速率的方法，但我仍然得到同样的错误。有人可以给我一个如何解决这个错误的提示吗？

感谢您的帮助！

Hi!
I am new at programming.
I wrote this short program for a class project. The user enters book or magazine, quantity sold, price per unit, and royalty rate. The program returns total amount plus total royalties due client. I can't get past entering the "royaltyRate" when I am testing the program. When I get an error for the "royalty rate" incorrect format. I have tried several different ways of entering the rate, but I still get the same error. Can someone give me a tip on how to solve this error?
Thanks for you assistance!

static void Main(string[] args)
        {
            Console.WriteLine("Welcome to the Royalty Calculation Application!");
            Console.WriteLine("Please enter Clients Name: ");
            string clientName = Convert.ToString(Console.ReadLine());

            Console.WriteLine("Please enter Item Name: ");
            string itemName = Convert.ToString(Console.ReadLine());

            Console.WriteLine("Please enter quantity sold:  ");
            int quantity = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Please enter unit price per item: {C:0} ");
            decimal price = Convert.ToDecimal(Console.ReadLine());

            Console.WriteLine("Please enter Royalty Rate: ");
            decimal royaltyRate = Convert.ToDecimal(Console.ReadLine());

            decimal totalSold = quantity * price;
            Console.WriteLine("Total Amount Sold: {C:0} ", totalSold);

            decimal royaltyToBePaid = totalSold * royaltyRate;
            Console.WriteLine("Total Royalty due Client: {C:0} ", royaltyToBePaid);
       }

推荐答案

字符串中的 {0} 是应该表示传递给WriteLine的参数号。

以下

The {0} in the string is supposed to represent the parameter number that is being passed to the WriteLine.
The following

Console.WriteLine("Total Amount Sold: {0} ", totalSold);
Console.WriteLine("Total Amount Sold: {0} ", totalSold.ToString("C2"));

产生

produces

Total Amount Sold: 300
Total Amount Sold: £300.00

static void Main(string[] args)
{
    Console.WriteLine("Welcome to the Royalty Calculation Application!");
    Console.WriteLine("Please enter Clients Name: ");
    string clientName = Convert.ToString(Console.ReadLine());

    Console.WriteLine("Please enter Item Name: ");
    string itemName = Convert.ToString(Console.ReadLine());

    Console.WriteLine("Please enter quantity sold:  ");
    int quantity = Convert.ToInt32(Console.ReadLine());

    Console.WriteLine("Please enter unit price per item: ");
    decimal price = Convert.ToDecimal(Console.ReadLine());

    Console.WriteLine("Please enter Royalty Rate: ");
    decimal royaltyRate = Convert.ToDecimal(Console.ReadLine());

    decimal totalSold = quantity * price;
    Console.WriteLine("Total Amount Sold: {0} ", totalSold.ToString("C2"));

    decimal royaltyToBePaid = totalSold * royaltyRate;
    Console.WriteLine("Total Royalty due Client: {0} ", royaltyToBePaid.ToString("C2"));


}

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