//Programmer:

//Dates:

//Project:

//Description:

​

using System;

public class Program

{

    public static void Main()

    {

        //Welcome the user + take their info

        Console.WriteLine("Welcome to the Invest to become a billionare caclualator!");

        inputError1: //Label for error checking

        //Take in users initial investment + create it into a variable

        Console.Write("How much would you like to invest?: ");

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

        if (uInvest <=0 )

        {

            Console.WriteLine("ERROR! Please enter that is larger than 0!");

            Console.WriteLine(" ");

            goto inputError1;

        }

        inputError2://Label for error checking

        //Take in users interest rate + create it into a variable

        Console.Write("What is your intrest rate? (Must be positive (%)): ");

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

        //Error checking, if the user enters a negative number

        if (uIRate <= 0)

        {

            Console.WriteLine("ERROR! Please enter that is larger than 0!");

            Console.WriteLine(" ");

            goto inputError2;

        }

        //Turn the intrest rate into a decimal

        double Rate = (double)uIRate/100;

        //set up the inital balance of user and #of years

        double Balance = uInvest;

        int Year = 0;

        //Create the table for the out data

        Console.WriteLine();

        Console.WriteLine($"{"Time",6} {"Interest",20} {"Balance",25}");

        Console.WriteLine(new string('-', 60));

        // Calculate yearly interest and balance

        while (Balance <= 1000000000) // 1 billion

        {

            Year++; //Add a year each time

            //Calculate for interest 

            double interest = Balance * Rate;

            Balance += interest; // Add the interest earned this year to the current balance

​

            Console.WriteLine($"{Year,6} {interest,20:C2} {Balance,25:C2}"); //Display the year, interest earned that year and the final balance for that year 

        }

​

        Console.WriteLine("  ");

        Console.WriteLine($"It will take you {Year} years to become a billionaire!"); //Tell the user how long it will take for them to make a billion dollars 

    }

}