using System;

public class Program

{

    public static void Main()

    {

        TryDivision();

        int n1 = 3;

        int n2 = 5;

        Console.WriteLine("Before swap number 1: {0} and number 2: {1}", n1,n2);

        Swap(ref n1,ref n2);

        Console.WriteLine("After swap number 1: {0} and number 2: {1}", n1,n2);

        int num10;

        SetToTen(out num10);

        Console.WriteLine("After Function call number 10: {1}",num10);

    } 

    public static void TryDivision(){

        Console.WriteLine("Enter a number to divide: ");

        int n1 = Convert.ToInt32(Console.ReadLine());

​

        Console.WriteLine("Enter a number divisor: ");

        int n2 = Convert.ToInt32(Console.ReadLine());

        try{

            Console.WriteLine("Number Divided : {0}", (n1/n2));

        }catch (Exception ex){

            Console.WriteLine("Error: {0}", ex);

            throw;

        }finally{

            Console.WriteLine("Program Finished Executing.");

        }

    }

    public static void Swap(ref int num1,ref int num2){

        int temp = num1;

        num1 = num2;

        num2 = temp;

        Console.WriteLine("Swap Completed.");

    }

    public static void SetToTen(out int num){

        num = 10;

    }

}