using System;

​

/*

This program will ask the user for the first name.

Then asks the user to enter a number from 0 to 9. (check to make sure.)

if the user entered an incorrect number use the number 5.

Then asks the user to enter another number from 0 to 9. (check to make sure.)

if the user entered an incorrect number use the number 5.

add the two numbers together and provide an output to the user for the sum. (sum = num1 + num2)

multiply the two numbers together and provide the output to the user for the product. (product = num1 * num2)

subtract the first number from the second number and provide the user with the difference. (difference = num1 - num2)

Thank the user for using your basic calculator.

​

*/

​

public class Program

{

    public static void Main()

    {

        string firstName;

        int number1; 

        int number2; 

        int sum;

        int product;

        int difference;

        Console.WriteLine("Please input your first name:");

        firstName = Console.ReadLine();

        Console.WriteLine(" Please input a number between 0 and 10: "); 

        number1 = int.Parse(Console.ReadLine());

        if( number1 > 10 )

        { number1 = 5; }

        else if ( number1 < 0)

        { number1 = 5; }

        Console.WriteLine(" Please input another number between 0 and 10: "); 

        number2 = int.Parse(Console.ReadLine());

        if( (number2 > 10) || (number2 < 0) )

        { number2 = 5; }

        sum = number1 + number2;

        product = number1 * number2;

        difference = number1 - number2;

        Console.WriteLine(firstName + " the sum of " + number1 + " plus " + number2 + " is " + sum);

        Console.WriteLine(firstName + " the product of " + number1 + " times " + number2 + " is " + product);

        Console.WriteLine(firstName + " the difference of " + number1 + " minus " + number2 + " is " + difference);

        Console.WriteLine(firstName + " Thanks for using my basic calculator! ");

        Console.ReadLine();

    }

}