using System;

​

public class Program

{

    public static void Main()

    {

        //  Mario Espinosa

        //With this practice we will learn how to use double and int data and how to do the four basic mathematical operations

        int a, b; //Declare two variables where we can save integer numbers

        double c, d; //Declare two variables where we can save numbers with decimals

        //Declare double variables for the basic operations in case the result has decimals

        double sum, subtraction, product, division;

        //Now let's assign some values to our variables

        a = 63;

        b = 69;

        c = 57;

        d = 15;

        sum = a + b;

        Console.WriteLine("The sum of " + a + " and " + b + " is: " + sum);

        Console.WriteLine(); //Skip a line with an empty WriteLine

        subtraction = d - b