why we use console.readkey() in c# code example

Example 1: Console.ReadKey();

using System;

	namespace GrepperAnswer
    {
    	public class Answer
        {
        	static void Main(string[] args)
            {
            
            		Console.ReadKey();
                    
            }
       	
        }
        
    }

Example 2: shortcut console.readkey in c#

<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippets  xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>cr</Title>
      <Shortcut>cr</Shortcut>
      <Description>Code snippet for Console.ReadLine</Description>
      <Author>Community</Author>
      <SnippetTypes>
        <SnippetType>Expansion</SnippetType>
      </SnippetTypes>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="false">
          <ID>SystemConsole</ID>
          <Function>SimpleTypeName(global::System.Console)</Function>
        </Literal>
      </Declarations>
      <Code Language="csharp">
        <![CDATA[$SystemConsole$.ReadLine();$end$]]>
      </Code>
    </Snippet>
  </CodeSnippet>
</CodeSnippets>