Question

我正在尝试将字符串从一个方法传递给我的Main方法。

该程序是一个C＃控制台应用程序。它应该让用户输入他的名字，姓氏和出生地。然后它应该反转每个并再次输出它们。（例如Bob Tabor America - ＆gt; boB robaT aciremA）。

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

namespace HelperMethods
{
    class Program
    {
        static void Main(string[] args)
        {
            GetString();
            DisplayResult(ReverseString(input));
        }
        private static string GetString()
        {
            Console.WriteLine("The Name Game");

            Console.Write("What's your first name? ");
            string firstName = Console.ReadLine();

            Console.Write("What's your last name? ");
            string lastName = Console.ReadLine();

            Console.Write("In what city were you born? ");
            string birthPlace = Console.ReadLine();

            string input = firstName + " " + lastName + " " + birthPlace;
            return input;
        }

        private static string ReverseString(string message)
        {
            char[] messageArray = message.ToCharArray();
            Array.Reverse(messageArray);
            return String.Concat(messageArray);
        }

        private static void DisplayResult(string result)
        {
            Console.Write("Results: " + result);
        }
    }
}

请注意我是如何尝试将GetString()的字符串输入传递给Main方法。

给出的错误是：

名称＆＃39;输入＆＃39;在当前上下文中不存在

我该怎么办？

Answer 1

您需要先存储input：

static void Main(string[] args)
{
     var input = GetString();
     DisplayResult(ReverseString(input));
}

Answer 2

namespace HelperMethods
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = GetString();
            DisplayResult(ReverseString(input));

        }

        private static string GetString()
        {
            Console.WriteLine("The Name Game");

            Console.Write("What's your first name? ");
            string firstName = Console.ReadLine();

            Console.Write("What's your last name? ");
            string lastName = Console.ReadLine();

            Console.Write("In what city were you born? ");
            string birthPlace = Console.ReadLine();

            string input = firstName + " " + lastName + " " + birthPlace;
            return input;
        }


        private static string ReverseString(string message)
        {
            char[] messageArray = message.ToCharArray();
            Array.Reverse(messageArray);
            return String.Concat(messageArray);
        }

        private static void DisplayResult(string result)
        {
            Console.Write("Results: " + result);
        }

    }
}

Answer 3

string result = GetString();
DisplayResult(ReverseString(result));

Answer 4

试试这个：

static void Main(string[] args)
{
   string input = GetString();
   DisplayResult(ReverseString(input));
}

Answer 5

简单地

static void Main(string[] args)
{
    DisplayResult(ReverseString(GetString()));
}

但是，对于您期望的输出，请在print / concat之前反转每个单词。

例如

using System;

public static class Program {
    public static void Main(string[] args) {
        Console.WriteLine("The Name Game");
        Console.Write("What's your first name? ");
        var firstName = Console.ReadLine().Reverse();
        Console.Write("What's your last name? ");
        var lastName = Console.ReadLine().Reverse();
        Console.Write("In what city were you born? ");
        var birthPlace = Console.ReadLine().Reverse();
        Console.Write("Result: {0} {1} {2}", firstName, lastName, birthPlace);
    }

    public static string Reverse(this string s) {
        var arr = s.ToCharArray();
        Array.Reverse(arr);
        return new string (arr);
    }
}

输出

Result: boB robaT aciremA

如何将字符串从一个方法传递给Main方法？

5 个答案: