using System;

public class Program

{

    /*

    Input

        studentAnswer

​

    Process

        create object: generator

        generate random1

        generate random2

        display random1 and random2

        get studentAnswer

        calculate correctAnswer (random1 + random2)

        display correctAnswer

​

    Output

        random1

        random2

        correctAnswer

​

    EXAMPLE: 99 + 111 = 212

​

    */

    public static void Main()

    {

        // Create the random number generator

        Random generator = new Random();  // creates an object called generator that can generate a random number

        // Create two random numbers

        int random1 = generator.Next(10, 999);// creates a variable called random1 that will contain a number between 10 and 999

        int random2 = generator.Next(10, 999);

        // Calculate the correct answer

        int correctAnswer = random1 + random2;

        // Display the numbers and request an answer

        Console.WriteLine("Please add these two numbers together and type your answer.\n");

        Console.WriteLine(String.Format("{0,6}", random1)); // displays random1 right justified in a column of 5 characters

        Console.Write("+");

        Console.WriteLine(String.Format("{0,5}", random2));

        Console.WriteLine("-------");

        Console.WriteLine(String.Format("{0,6}", "?"));

        // Get the student's answer

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

        // Display the correct answer

        Console.WriteLine("\nThe correct answer is: " + correctAnswer);     

    }

}