Write C# code to declare a variable to store the age of a person. Then the output of the program is as an example shown below:

You are 20 years old.

Solution:

using System;

­using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Csharp_exercises

{

class Program

{

static void Main(string[] args)

{

int age = 20;// declaring variable and assign 20 to it.

Console.WriteLine("You are {0} years old.",age);

Console.ReadLine();

}

}

}