static void Main(string[] args) { double xiaofei ; double sh; Console.WriteLine("消费金额"); xiaofei = int.Parse(Console.ReadLine()); if (xiaofei < 500) { } else if (xiaofei >=500) { sh=xiaofei*0.9; } else if (xiaofei >= 1000) { sh = xiaofei * 0.8; } else if (xiaofei >= 2000) { sh = xiaofei * 0.7; } else if (xiaofei >= 3000) { sh = xiaofei * 0.6; } Console.WriteLine("你的消费金额"+xiaofei ); Console.WriteLine(sh); Console.ReadLine();

这段代码是一个简单的消费金额计算程序。用户输入消费金额后，程序会根据不同的消费金额范围给出不同的折扣，最终输出用户的消费金额和折后金额。

具体来说，如果消费金额小于500，则不打折；如果消费金额在500到999之间，则打9折；如果消费金额在1000到1999之间，则打8折；如果消费金额在2000到2999之间，则打7折；如果消费金额大于等于3000，则打6折。

这段代码有些问题，例如当消费金额恰好等于500、1000、2000和3000时会出现错误的折扣计算。同时，代码中缺少对折扣金额的输出，程序输出的是折后金额。

相关问题

请扮演一个命令终端运行using System; namespace CalculateSum { class Program { static void Main(string[] args) { Console.WriteLine("请输入第一个数："); int num1 = int.Parse(Console.ReadLine()); Console.WriteLine("请输入第二个数："); int num2 = int.Parse(Console.ReadLine()); int sum = num1 + num2; Console.WriteLine("两数之和为：" + sum); Console.ReadLine(); } } }

好的，我将扮演一个命令终端来运行这段C#代码。首先，我需要打开一个C#编译器，例如Visual Studio或者Visual Studio Code，并创建一个新的控制台应用程序。然后，我将复制上述代码并粘贴到Main方法中。

接下来，我将保存代码并编译它，然后在命令终端中运行生成的可执行文件。当我运行程序时，控制台将提示我输入两个数。我将输入两个数字，程序将计算它们的和并将结果输出到控制台。最后，程序将等待我按下回车键，以便保持控制台窗口打开状态。

以下是命令终端中运行该程序的演示（假设已经编译并保存程序为CalculateSum.exe文件）：

> CalculateSum.exe
请输入第一个数：
5
请输入第二个数：
7
两数之和为：12

通过这种方式，我可以在命令终端中运行和测试C#程序。

Console.WriteLine("Please enter a number:"); int number = int.Parse(Console.ReadLine()); while (number <= 0) { Console.WriteLine("Sorry,please enter a positive value."); number = Int32.Parse(Console.ReadLine()); } Console.WriteLine("Please enter " + number + " words:"); string[] words = new string[number]; for (int n = 0; n < number; n++) { Console.WriteLine($"Please enter word {n + 1}"); string word = Console.ReadLine(); while (word.Length < 1) { Console.WriteLine("Sorry,your word must have at least one character"); word = Console.ReadLine(); } words[n] = word; } Console.WriteLine("You enter these words:"); foreach (string s in words) { Console.WriteLine(s); }; Console.WriteLine("Please enter a character:"); char letter = char.Parse(Console.ReadLine()); if (char.IsLetter(letter)) { string joinedWords = string.Join("", words).ToLower(); int count = 0; for (int i = 0; i < joinedWords.Length; i++) { if (joinedWords[i] == letter) { count++; } } if (count == 0) { Console.WriteLine("The letter you entered does not appear"); } else { double per = Convert.ToDouble(count) / Convert.ToDouble(joinedWords.Length); if (per > 0.25) { Console.WriteLine("The letter " + letter + " appears " + count + " times in the array. This letter makes up more than 25 % of the total number of characters."); } else { Console.WriteLine("The letter " + letter + " appears " + count + " times in the array. This letter makes up less than 25 % of the total number of characters."); } } } else { Console.WriteLine("Incorrect letter format entered,Please enter again:"); letter = char.Parse(Console.ReadLine()); } 改进代码

以下是改进后的代码，主要是加入了异常处理和代码重构：

using System;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = ReadPositiveInt("Please enter a number:");
            string[] words = new string[number];

            for (int n = 0; n < number; n++)
            {
                words[n] = ReadNonEmptyString($"Please enter word {n + 1}:");
            }

            Console.WriteLine("You entered these words:");
            foreach (string word in words)
            {
                Console.WriteLine(word);
            }

            char letter = ReadLetter("Please enter a character:");

            string joinedWords = string.Join("", words).ToLower();
            int count = CountLetter(letter, joinedWords);

            if (count == 0)
            {
                Console.WriteLine($"The letter {letter} does not appear");
            }
            else
            {
                double per = Convert.ToDouble(count) / Convert.ToDouble(joinedWords.Length);
                if (per > 0.25)
                {
                    Console.WriteLine($"The letter {letter} appears {count} times in the array. This letter makes up more than 25% of the total number of characters.");
                }
                else
                {
                    Console.WriteLine($"The letter {letter} appears {count} times in the array. This letter makes up less than 25% of the total number of characters.");
                }
            }
        }

        static int ReadPositiveInt(string message)
        {
            int number;
            while (true)
            {
                try
                {
                    Console.WriteLine(message);
                    number = int.Parse(Console.ReadLine());
                    if (number > 0)
                    {
                        return number;
                    }
                    else
                    {
                        Console.WriteLine("Sorry, please enter a positive value.");
                    }
                }
                catch (FormatException)
                {
                    Console.WriteLine("Invalid input format, please enter an integer.");
                }
            }
        }

        static string ReadNonEmptyString(string message)
        {
            string word;
            while (true)
            {
                Console.WriteLine(message);
                word = Console.ReadLine();
                if (!string.IsNullOrEmpty(word))
                {
                    return word;
                }
                else
                {
                    Console.WriteLine("Sorry, your word must have at least one character.");
                }
            }
        }

        static char ReadLetter(string message)
        {
            char letter;
            while (true)
            {
                try
                {
                    Console.WriteLine(message);
                    letter = char.Parse(Console.ReadLine());
                    if (char.IsLetter(letter))
                    {
                        return letter;
                    }
                    else
                    {
                        Console.WriteLine("Incorrect letter format entered, please enter again:");
                    }
                }
                catch (FormatException)
                {
                    Console.WriteLine("Invalid input format, please enter a letter.");
                }
            }
        }

        static int CountLetter(char letter, string word)
        {
            int count = 0;
            foreach (char c in word)
            {
                if (c == letter)
                {
                    count++;
                }
            }
            return count;
        }
    }
}

改进后的代码加入了异常处理，可以更好地处理输入错误的情况。同时，代码也进行了重构，使得逻辑更加清晰，可读性更高。