using System;

public class Program

{

    public static void Main()

    {

    /* I

        1. Which of the following is (are) not a legal variable name?

            myVariableIsGood - legal

            99Flake - illegal (starts with a number)

            _floor legal

            time2GetJiggyWidIt legal

            wrox.com illegal (contains illegal character) 

        2. By considering operator precedence, list the steps involved in the computation of the following expression:

            resultVar += var1 * var2 + var3 % var4 / var5; 

            Considering the operator precedence, the operation will start by resultVar at the beginning, added to the entire 

            operation. var1 will be multiplied to var2 (where resultVar + (var1 * var2)), and then the next operation, %, will

            be conducted (var3 % var4). Then, the result of var3 & var4 should be divided by var5. This should be added to the

            multiplied value of var1 and var2, which sum should be added finally to resultVar. Below is an example: */

            int resultVar=1, var1 = 1, var2 = 2, var3 = 3, var4 = 4, var5 =5;

            resultVar += var1 * var2 + var3 % var4 / var5;

            Console.WriteLine(resultVar);

​

    //II. Write a console application that obtains four int values from the user and displays the product.*/

            Console.WriteLine("Input first number");

            int num1 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Input second number");

            int num2 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Input third number");

            int num3 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Input fourth number");

            int num4 = Convert.ToInt32(Console.ReadLine());

            int product = num1 + num2 + num3 + num4;    

            Console.WriteLine("Product is = " + product);

    }

}