Cant figure out simple console app

I have created a very simple console app that
1. Displays menu with list of options to choose
2. Should be able to add/substract/multiply/divide based on the option choosen
3. once option is chosen, should prompt the user to enter the inputs and provide the output.

Now i need to change to code in order to follow the below guidlines:
- Use one class per method.
- Common base class for all the operations.

Can someone please help me out with this?

The code is below:

using System;

namespace ConsoleApp
{


public class Choices
{

public static void Main()
{
int num1;
int num2;

string myChoice;


Choices chs = new Choices();

do
{
myChoice = chs.getChoice();
Console.Write("press Enter key to continue...");
Console.ReadLine();
Console.WriteLine();

// Make a decision based on the user's choice
switch (myChoice)
{
case "1":
Console.Write("Please enter the first integer: ");
num1 = Convert.ToInt32(Console.ReadLine());

Console.Write("Please enter the second integer: ");
num2 = Convert.ToInt32(Console.ReadLine());

Console.Write(num1);
Console.Write(" + ");
Console.Write(num2);
Console.Write(" = ");
Console.Write(num1 + num2);

break;

case "2":
Console.Write("Please enter the first integer: ");
num1 = Convert.ToInt32(Console.ReadLine());

Console.Write("Please enter the second integer: ");
num2 = Convert.ToInt32(Console.ReadLine());

Console.Write(num1);
Console.Write(" - ");
Console.Write(num2);
Console.Write(" = ");
Console.Write(num1 - num2);
break;

case "3":
Console.Write("Please enter the first integer: ");
num1 = Convert.ToInt32(Console.ReadLine());

Console.Write("Please enter the second integer: ");
num2 = Convert.ToInt32(Console.ReadLine());

Console.Write(num1);
Console.Write(" / ");
Console.Write(num2);
Console.Write(" = ");
Console.Write(num1 / num2);
break;

case "4":
Console.Write("Please enter the first integer: ");
num1 = Convert.ToInt32(Console.ReadLine());

Console.Write("Please enter the second integer: ");
num2 = Convert.ToInt32(Console.ReadLine());
Console.Write(num1);
Console.Write(" * ");
Console.Write(num2);
Console.Write(" = ");
Console.Write(num1 * num2);
break;

case "5":
Console.WriteLine("Bye.");
break;
default:
Console.WriteLine("{0} is not a valid choice", myChoice);
break;
}


Console.ReadLine();

Console.ReadLine();
Console.WriteLine();

} while (myChoice != "5"); // Keep going until the user wants to quit
}



string myChoice;


string getChoice()
{


// Print A Menu
Console.WriteLine("What would you like to do?");

Console.WriteLine("1 - Do you want to add two numbers?");
Console.WriteLine("2 - Do you want to subtract two numbers?");
Console.WriteLine("3 - Do you want to divide two numbers?");
Console.WriteLine("4 - Do you want to multiply two numbers?");
Console.WriteLine("5 - Quit\n");

Console.Write("Choice (1,2,3,4,or 5): ");


// Retrieve the user's choice
myChoice = Console.ReadLine();
Console.WriteLine();

return myChoice;
}
}
}

Please edit your post, after reading the following, in particular regarding posting code. Thanks.

Regards,
Quinn

Yeah, no one reads posts with long sections of code that aren't encased in code tags - [ code ] [ /code ] (remove spaces). they're often just too hard to read.

Also, this looks like homework. Tell us what you have tried or what conecpts you are having trouble with. There are a ton of articles that explain classes, so google may be a good first stop.