C# Online Compiler | .NET Fiddle

using System;
					
public class Program
{
	public static void Main()
	{
		int age = 25;
		switch (age) {
			
			case 16:
			Console.WriteLine("Muda");
			break;
			
			case 42:
			Console.WriteLine("Remaja");
			break;
			
			case 70:
			Console.WriteLine("Dewasa");
			break;
			
			default:
			Console.WriteLine("Tak Di ketahui");
			break;
		}
	}
}

 
using System;
                    
public class Program
{
    public static void Main()
    {
        int age = 25;
        switch (age) {
            
            case 16:
            Console.WriteLine("Muda");
            break;
            
            case 42:
            Console.WriteLine("Remaja");
            break;
            
            case 70:
            Console.WriteLine("Dewasa");
            break;
            
            default:
            Console.WriteLine("Tak Di ketahui");
            break;
        }
    }
}

<h1>This is <b>bold</b> heading</h1>

***** After adding attribute *****

<h1 style="color: red">This is <b>bold</b> heading</h1>