//This is a tester for your program. We use input and output files. However, the input and
//output parts are already taken care of within this class and you do not need to do anything
//on these at all.

//The input file is called "input.in". You can create it by yourself or use the one given.
//Each line of the input file corresponds to a set of input, i.e. a triple of targetSavings,
//numberOfMonths and interestRate, which should be of int, int and double types respectively,
//separated by space.

//The output file is called "output.out" and will be created if it doesn't exit. If it does
//exist, the content of the file will be flushed everytime you run the program (i.e. the file
// will be emptied first and new outputs will be written in this same file)

//The only place where you need to modify this class is the error-handling code that
//inteprets lines in the input file as (int,int,double) input triple.  The error handling
//here is the same as you would do for taking the (int,int,double) input from the console.

//You should modify the input file in order to test your program, and open the output file
//after you run your program to see the result your code provides.



import java.util.Scanner;
import java.io.*;

public class SavingsCalculatorTester
{
	private Scanner read;
	private PrintStream write;

	//constructor
	public SavingsCalculatorTester()
	{
		//catch the exceptions
		try
		{
			read = new Scanner(new FileReader("input.in"));
		}
		catch(FileNotFoundException e)
		{
			System.out.println("Input file not found!");
			System.exit(1);
		}

		try
		{
			write = new PrintStream( new FileOutputStream("output.out"));
		}

		catch(FileNotFoundException e)
		{
			System.out.println("Output file not found! Creating a new file...");
		}
	}

	//main method where the program begins.

	public static void main(String args[])
	{
		SavingsCalculatorTester tester = new SavingsCalculatorTester();
		tester.test();
	}

	//test your SavingsCalulator using the input file and write the result into the output
	//file
	public void test()
	{
		Input input = new Input();
		int output;

		Boolean hasMore= getInput(input);
		while (hasMore)
		{
			SavingsCalculator calculator = new SavingsCalculator();

			output = calculator.calculateMonthlyPayment
			(input.targetSavings, input.numberOfMonths, input.interestRate);

			write.println((double)output/100);

			hasMore = getInput(input);
		}

	}

	//get input from the file.
	private Boolean getInput(Input input)
	{
		if( read.hasNext())
		{

		    //The code below reads a line from the input file and assumes
		    //that it provides a correctly formatted (int,int,double) triple.
		    //You should re-write this code so that it robustly handles all
		    //mistakes in the inputs, as we explain in the "Interface, Robust Code, 
		    //Exception Handling" section of the lab
   
			input.targetSavings = read.nextInt();
			input.numberOfMonths = read.nextInt();
			input.interestRate = read. nextDouble();

			return true;
		}
		return false;
	}


}