Write a program in C# to find the number of an array and the square of each number in LINQ Query

I have used Visual Studio 2012 for debugging purpose. But you can use any version of visul studio as per your availability.

using System;
using System.Linq;
using System.Collections.Generic;
 
class LinqExercise
{
    static void Main(string[] args)
    {
 
        var arr = new[] { 6,7,8,9 };
 
        var sqaure = from int Number in arr
                   let SqrNo = Number * Number                   
                     select new { Number, SqrNo };
 
        foreach (var a in sqaure)
            Console.WriteLine(a);
 
        Console.ReadLine();
    }
}

Result:

{ Number = 6, SqrNo = 36 }

{ Number = 7, SqrNo = 49 }

{ Number = 8, SqrNo = 64 }

{ Number = 9, SqrNo = 81 }