小编use*_*322的帖子

你能解释我应该如何避免这个警告:在Visual Studio 2010 Express中"检测到无法访问的代码"？我正在从手册中学习C#.这是一个创建简单方法的练习.我正如书中所写的那样进入这个例子.谢谢.

public class Multiply 
{
    //Multiplies argument by 4 

    public static int MultiplyBy4(int aNumber)
    {
        return 4 * aNumber;
        //Shows ways of passing various arguments to a method public static void Main
        int x = 7;
        int y = 20;
        int z = -3;
        int result = 0;

        result = MultiplyBy4(x);
        Console.WriteLine("Passsing a variable, x : {0}", result);

        result = MultiplyBy4(y + 2);
        Console.WriteLine("Passing an expression, Y + 2: {0}", result);

        result = 5 + MultiplyBy4(z);
        Console.WriteLine("Using …