いくつかの面白いプログラムの問題

 1:  static class Program

 2:     {

 3:         static int x, y;

 4:   

 5:         static Program()

 6:         {

 7:             // ， 。 x=0,y=0

 8:             int x = 5;

 9:         }

10:   

11:         static void Main(string[] args)

12:         {

13:             //x-- x=-1

14:             x--;

15:             //

16:             myMethod();

17:             // ?x+y=1,x=x+1=2,1+2=3, 

18:             System.Console.WriteLine(x + y + ++x);

19:             Console.Read();

20:         }

21:   

22:         public static void myMethod()

23:         {

24:             //++x x=x+1=0,x++ ?y=0+0=0 ?x=x+1=1

25:             y = x++ + ++x;

26:         }

27:     }

.codearea{ color:black; background-color:white; line-height:18px; border:1px solid #4f81bd; margin:0; width:auto !important; width:100%; overflow:auto; text-align:left; font-size:12px; font-family: "Courier New","Consolas","Fixedsys","BitStream Vera Sans Mono", courier,monospace,serif}
.codearea pre{ color:black; line-height:18px; padding:0 0 0 12px !important; margin:0em; background-color:#fff !important}
.linewrap pre{white-space:pre-wrap; white-space:-moz-pre-wrap; white-space:-pre-wrap; white-space:-o-pre-wrap; word-wrap:break-word; word-break:normal}
.codearea pre.alt{ background-color:#f7f7ff !important}
.codearea .lnum{color:#4f81bd;line-height:18px}
 
コードの分析を経て,最後の結果は3であった.
 
标题2:次のプログラムは何を出力しますか?
 

 1:  static void Main(string[] args)

 2:       {

 3:           bool a = true;

 4:           bool b = false;

 5:           bool c = true;

 6:   

 7:           if (a == true)

 8:               if (b == true)

 9:                   if (c == true)

10:                       Console.WriteLine("ss");

11:                   else

12:                       Console.WriteLine("we");

13:               else if (a && (b = c))

14:                   Console.WriteLine("wer");

15:               else

16:                   Console.WriteLine("were");

17:   

18:           Console.Read();

19:   

20:       }

.codearea{ color:black; background-color:white; line-height:18px; border:1px solid #4f81bd; margin:0; width:auto !important; width:100%; overflow:auto; text-align:left; font-size:12px; font-family: "Courier New","Consolas","Fixedsys","BitStream Vera Sans Mono", courier,monospace,serif}
.codearea pre{ color:black; line-height:18px; padding:0 0 0 12px !important; margin:0em; background-color:#fff !important}
.linewrap pre{white-space:pre-wrap; white-space:-moz-pre-wrap; white-space:-pre-wrap; white-space:-o-pre-wrap; word-wrap:break-word; word-break:normal}
.codearea pre.alt{ background-color:#f7f7ff !important}
.codearea .lnum{color:#4f81bd;line-height:18px}
 
結果はwer.
 
标题3:以下の手順で何が表示されますか?

 1:  static void Main(string[] args)

 2:        {

 3:            char digit = 'a';

 4:            for (int i = 0; i < 10; i++)

 5:            {

 6:                switch (digit)

 7:                {

 8:                     case 'x' :

 9:                     {

10:                        int j = 0;

11:                         Console.WriteLine(j);

12:                     }

13:                     default :

14:                     {

15:                        int j = 100;

16:                        Console.WriteLine(j);

17:                     }

18:                }

19:   

20:            }

21:                int i = j;

22:                Console.WriteLine(i);

23:                Console.Read();

24:   

25:        }

.codearea{ color:black; background-color:white; line-height:18px; border:1px solid #4f81bd; margin:0; width:auto !important; width:100%; overflow:auto; text-align:left; font-size:12px; font-family: "Courier New","Consolas","Fixedsys","BitStream Vera Sans Mono", courier,monospace,serif}
.codearea pre{ color:black; line-height:18px; padding:0 0 0 12px !important; margin:0em; background-color:#fff !important}
.linewrap pre{white-space:pre-wrap; white-space:-moz-pre-wrap; white-space:-pre-wrap; white-space:-o-pre-wrap; word-wrap:break-word; word-break:normal}
.codearea pre.alt{ background-color:#f7f7ff !important}
.codearea .lnum{color:#4f81bd;line-height:18px}
 
間違いを報告します.
エラー1:この範囲内で「i」というローカル変数を宣言することはできません.これは、「i」が異なる意味を持ち、「サブ」の範囲内で他の内容を表しているためです.
エラー2:現在のコンテキストに名前「j」は存在しません.
 
Technoratiラベル:
c# ,
プログラム問題