Fibonacci Series in C#

using System;

public class FibonacciExample

{

public static void Main(string[] args)

{

int n1=0,n2=1,n3,i,number;

Console.Write("Enter the number of elements: ");

number = int.Parse(Console.ReadLine());

Console.Write(n1+" "+n2+" "); //printing 0 and 1

for(i=2;i<number;++i) //loop starts from 2 because 0 and 1 are already printed

{

n3=n1+n2;

Console.Write(n3+" ");

n1=n2;

n2=n3;

}

}

}