c# 類對象和實例對象

1) What are the correct statements about given code snippets? using System;public class Example {virtual private int X;private int Y;static void Main(string[] args){Console.WriteLine("Hello World");} }

Hello World

HelloWorld

Syntax Error

Runtime Exception

Answer & Explanation

Correct answer: 3
Syntax Error

The above code will generate a syntax error.

The output would be,

1)關于給定代碼段的正確陳述是什么？ using System ;public class Example {virtual private int X ;private int Y ;static void Main ( string [ ] args ){Console . WriteLine ( " Hello World " ) ;} }

你好，世界

你好，世界

語法錯誤

運行時異常

答案與解釋

正確答案：3
語法錯誤

上面的代碼將生成語法錯誤。

輸出將是

2) What is the correct output of given code snippets? using System;public class Example {private int X;private int Y;Example(){this.X = 1;this.Y = 2;}static void Main(string[] args){Example Ob = new Example();Console.WriteLine("{0}, {1}", Ob.X, Ob.Y);} }

1, 2

12

Syntax Error

Runtime Exception

Answer & Explanation

Correct answer: 1
1, 2

The above code will print (1, 2) on the console screen.

2)給定代碼段的正確輸出是什么？

一二

12

語法錯誤

運行時異常

答案與解釋

正確答案：1
一二

上面的代碼將在控制臺屏幕上打印(1，2)。

3) What is the correct output of given code snippets? using System;public class Example {private int X;private int Y;public Example(){this.X = 1;this.Y = 2;}public static ShowData(){Console.WriteLine("{0}, {1}", this.X, this.Y);}static void Main(string[] args){Example Ob = new Example();Ob.Show();} }

1, 2

12

Syntax Error

Runtime Exception

Answer & Explanation

Correct answer: 3
Syntax Error

The above code will generate a syntax error.

The output would be,

3)給定代碼段的正確輸出是什么？ using System ;public class Example {private int X ;private int Y ;public Example ( ){this . X = 1 ;this . Y = 2 ;}public static ShowData ( ){Console . WriteLine ( " {0}, {1} " , this . X , this . Y ) ;}static void Main ( string [ ] args ){Example Ob = new Example ( ) ;Ob . Show ( ) ;} }

一二

12

語法錯誤

運行時異常

答案與解釋

正確答案：3
語法錯誤

上面的代碼將生成語法錯誤。

輸出將是

4) What is the correct output of given code snippets? using System;public class Example {public Example Method1(){Console.Write("####, ");return this;}public Example Method2(){Console.Write("@@@@, ");return this;}public Example Method3(){Console.Write("$$$$, ");return this;}static void Main(string[] args){Example Ob = new Example();Ob.Method1().Method2().Method3();} }

####, @@@@, $$$$,

$$$$, @@@@, ####,

Syntax Error

Runtime Exception

Answer & Explanation

Correct answer: 1
####, @@@@, $$$$,

The above code will print (####, @@@@, $$$$,) on console screen.

4)給定代碼段的正確輸出是什么？

####，@@@@，$$$$，

$$$$，@@@@，####，

語法錯誤

運行時異常

答案與解釋

正確答案：1
####，@@@@，$$$$，

上面的代碼將在控制臺屏幕上打印(####，@@@@，$$$$)。

5) What is the correct output of given code snippets? using System;public class Example {public void SayHello(){Console.Write("Hello World");}static void Main(string[] args){this.Method();} }

Hello World

Hello world

Syntax Error

Runtime Exception

Answer & Explanation

Correct answer: 3
Syntax Error

In C#.NET we cannot use "this" reference in a static method.

The output would be,

5)給定代碼段的正確輸出是什么？ using System ;public class Example {public void SayHello ( ){Console . Write ( " Hello World " ) ;}static void Main ( string [ ] args ){this . Method ( ) ;} }

你好，世界

你好，世界

語法錯誤

運行時異常

答案與解釋

正確答案：3
語法錯誤

在C＃.NET中，我們不能在靜態方法中使用“ this”引用。

輸出將是

? C# Class & Object Aptitude | Set 3 C# Class & Object Aptitude | Set 5 ? ＃C＃類和對象的適應性| 設置3 C＃類和對象的適應性| 設置5?

翻譯自: https://www.includehelp.com/dot-net/csharp-class-object-aptitude-questions-and-answers-4.aspx

c# 類對象和實例對象

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