C# 'Unassigned local variable' ？

Question

我试图制作一段代码，它会在最后掷骰子来决定哪个角色获胜，但它一直说有错误(使用未分配的局部变量'skillmodifier') &(使用未分配的局部变量“strengthmodifier”)。我真的很感激任何帮助。 P.S 我只在 Visual Studio 2010 上做了很短的一段时间的编程。请帮我找到解决这个问题的方法，这个问题是因为我使用变量 'strengthmodifier' 和 'skillmodifier' 两次。谢谢你，你忠实的 Vikash。我将在下面粘贴任务简介和之后的代码:

任务 3 确定遭遇的结果当两个角色相遇时，结果由以下决定过程:

• 计算两个角色的强度属性之间的差异

• 此差异除以 5，然后向下舍入以创建“强度修正值”

• 对技能属性重复该过程以创建“技能修饰符”

• 每个玩家掷一个 6 面骰子。

• 如果两个骰子的分数相同，则不做任何更改

• 如果分数不相同，则得分最高的玩家加上“力量”modifier' 到力量值和 ‘skill modifier' 到他们的技能值性格

• 骰子得分较低的玩家从他们性格的力量和技能值

• 如果技能值变为负数，则将其存储为零

• 如果强度值变为零或负数，则角色死亡。

程序应该:

*• 允许用户输入两个角色的力量和技能。

• 使用上述过程显示遭遇的结果。设计一个算法来描述这个过程。编写、测试和评估代码。*

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

        namespace Task3
       {
         class Program
          {

            static void loopfsto()
             {

            Console.WriteLine("Please enter a value of strength, and then press enter");
            string csto = Console.ReadLine(); // Read string from console
            int csto1;
            if (int.TryParse(csto, out csto1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + csto1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfsto();
            }
        }

        static void loopfsko()
        {
            Console.WriteLine("Please enter a value of skill, and then press enter");
            string csko = Console.ReadLine(); // Read string from console
            int csko1;
            if (int.TryParse(csko, out csko1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + csko1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfsko();
            }
            Console.Clear();
        }

        static void loopfstt()
        {
            Console.WriteLine("Please enter a value of strength for, and then press enter");
            string cstt = Console.ReadLine(); // Read string from console
            int cstt1;
            if (int.TryParse(cstt, out cstt1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + cstt1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfstt();
            }
            Console.Clear();
        }

        static void loopfskt()
        {
            Console.WriteLine("Please enter a value of skill for, and then press enter");
            string cskt = Console.ReadLine(); // Read string from console
            int cskt1;
            if (int.TryParse(cskt, out cskt1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + cskt1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfskt();
            }

        }

        static void Main(string[] args)
        {

            string Character1;
            string Character2;
            int strengthmodifiertoround;
            int skillmodifiertoround;
            int strengthmodifier;
            int skillmodifier;
            Console.Title = "Strength and Skill";

            Console.WriteLine("Welcome to Strength and Skill, please press enter to continue.");
            Console.ReadKey();
            Console.Clear();

            Console.WriteLine("Please enter a name for character 1, then press enter.");
            Character1 = Console.ReadLine();
            Console.Clear();

            Console.WriteLine("Please enter a name for character 2, then press enter.");
            Character2 = Console.ReadLine();
            Console.Clear();

            Console.WriteLine("Please enter a value of strength for " + Character1 + ", and then press enter");
            string csto = Console.ReadLine(); // Read string from console
            int csto1;
            if (int.TryParse(csto, out csto1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + csto1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfsto();
            }


            Console.Clear();


            Console.WriteLine("Please enter a value of skill for " + Character1 + ", and then press enter");
            string csko = Console.ReadLine(); // Read string from console
            int csko1;
            if (int.TryParse(csko, out csko1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + csko1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfsko();
            }
            Console.Clear();

            Console.WriteLine(Character1 + " has a strength of " + csto1 + " and a skill of " + csko1 + ".");
            Console.ReadKey();
            Console.Clear();

            Console.WriteLine("Please enter a value of strength for " + Character2 + ", and then press enter");
            string cstt = Console.ReadLine(); // Read string from console
            int cstt1;
            if (int.TryParse(cstt, out cstt1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + cstt1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfstt();
            }
            Console.Clear();



            Console.WriteLine("Please enter a value of skill for " + Character2 + ", and then press enter");
            string cskt = Console.ReadLine(); // Read string from console
            int cskt1;
            if (int.TryParse(cskt, out cskt1)) // Try to parse the string as an integer
            {
                Console.WriteLine("Your chosen number is " + cskt1 + ".");
                Console.ReadKey();
            }
            else
            {
                Console.Clear();
                Console.WriteLine("Not an integer!");
                Console.ReadKey();
                Console.Clear();
                loopfskt();
            }
            Console.Clear();

            Console.WriteLine(Character2 + " has a strength of " + cstt1 + " and a skill of " + cskt1 + ".");
            Console.ReadKey();
            Console.Clear();
//--- Finds out if strength for character 1 is higher than 2 or vice versa. Then finds difference between two and makes a variable called strengthmodifier ---//

            {
                if (csto1 < cstt1)
                {
                    strengthmodifiertoround = cstt1 - csto1;
                    strengthmodifier = strengthmodifiertoround / 5;   
                }
                if (cstt1 < csto1)
                {
                    strengthmodifiertoround = csto1 - cstt1;
                    strengthmodifier = strengthmodifiertoround / 5;
                }
            }
//--- Finds out if skill for character 1 is higher than 2 or vice versa. Then finds difference between two and makes a variable called skillmodifier ---//

            {
                if (csko1 < cskt1)
                {
                    skillmodifiertoround = cskt1 - csko1;
                    skillmodifier = skillmodifiertoround / 5; 
                }
                if (cskt1 < csko1)
                {
                    skillmodifiertoround = csko1 - cskt1;
                    skillmodifier = skillmodifiertoround / 5;
                }
            }
//--- Tells user to put input and roll a virtual dice (which is actually creating a number between 1 and 6) ---//
            Console.WriteLine(Character1 + ", please press enter to roll dice");
            Console.ReadKey();
            Random rand = new Random();
            int character1RandomNumber = rand.Next(1, 6);

            Console.WriteLine(Character2 + ", please press enter to roll dice");
            Console.ReadKey();
            Random rand1 = new Random();
            int character2RandomNumber = rand1.Next(1, 6);
            Console.WriteLine(Character1 + " rolled a " + character1RandomNumber + " and " + Character2 + " rolled a " + character2RandomNumber + ".");
            Console.ReadKey();
            if (character1RandomNumber < character2RandomNumber)
            {
                int char2st = cstt1 + strengthmodifier;
                int char2sk = cskt1 + skillmodifier;
                int char1st = csto1 - strengthmodifier;
                int char1sk = csko1 - skillmodifier;
            }
            if (character2RandomNumber < character1RandomNumber)
            {

            }

                int ch2st = cstt1 - strengthmodifier;
                int ch2sk = cskt1 - skillmodifier;
                int ch1st = csto1 + strengthmodifier;
                int ch1sk = csko1 + skillmodifier;



        }
    }
}

Answer 1

实际上，我认为你的问题是因为 skillmodifier 和 strengthmodifier 没有在所有代码路径上获得赋值。 IE。它们仅在 if 子句和 visual studio 无法确定是否为所有可能的结果分配了值。这个警告不应该停止你的代码编译，但如果你想让它消失，你可以做类似的事情

int skillmodifiertoround = 0;

不仅仅是

int skillmodifiertoround;

现在 skillmodifiertoround 在声明时被赋予了一个值。

编辑:“这个警告不应该停止你的代码编译”——显然它会阻止程序在 c# 中正确编译，但在 vb 中同样的错误只给出警告但仍然编译。