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 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace ConsoleApp1
 8 {
 9     class Program
10     {
11         static void Main(string[] args)
12         {
13             /*
14             int x;
15             int y;
16 
17             x = 7;
18             y = x + 3;
19 
20             Console.WriteLine(y);
21             Console.ReadLine();
22             */
23 
24             //  注释掉一行代码
25 
26             /*
27                 注释掉多行代码
28             */
29 
30             Console.WriteLine("What is your name?");
31             Console.Write("Type your first name: ");
32             String myFirstName;
33             myFirstName = Console.ReadLine();
34 
35             String myLastName;
36             Console.WriteLine("What is your last name");
37             Console.Write("Type your last name: ");
38             myLastName = Console.ReadLine();
39             
40 
41         }
42     }
43 }

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