using System;

public class Program

{

    public static void Main()

    {

        /*

        GOAL

        Calculate zero of a linear function (don't panic, it's simple)

        TIPS

        You may remeber the concept of linear function from school, it looks like this:

        f(x) = ax + b

        First ask the user for a and b. For instance they will provide a=2 and b=4, which gives us:

        f(x) = 2x + 4

        To calculate zero, calculate what x should be to resolve this equation:

        0 = 2x + 4

        Print out the result like such:

        "Zero of f(x) = <a>x + <b> is <result>"

        WARNING

        When testing this, remember not to provide a=0 bacause the function will not have zero.

        */

        Console.WriteLine("Hello today we gonna do some math. Please enter values for A and B");

        Console.WriteLine("Value for a");

        var a = Console.ReadLine();

        Console.WriteLine("Value for b");

        var b = Console.ReadLine();

        var a_value = int.Parse(a);

        var b_value = int.Parse(b);

        double zero = -double.Parse(b)/double.Parse(a);

        if(a_value == 0)

        {

            Console.WriteLine("A cannot be 0");

        }

        else

        {

            Console.WriteLine("Zero of this linear function is: " + zero);

        }

    }

}