package com.Marek;

import java.io.*;
/**
 * Sum all the floating points in a binary file
 * Suppose a binary data file named  Exercise17_03.dat has been created and its data are created using
 * writeDouble(double) in DataOutputStream. The file contains an unspecified number of floating points
 * Write a program to find the sum of the floating points
 */

/**
 * So what to do ?
 * I create a file, Exercise17_03.dat ( not sure if it is correct ), and pars sme floating points.
 * i must input the files content and sum the floating point.
 */

public class Main {

    public static void main(String[] args) {
        String fileName = "Exercise17_03.dat";
        try {
            try (
                    DataOutputStream dataOutputStream = new DataOutputStream(new FileOutputStream(fileName))
            ) {
				//Created some input for testing. 

                dataOutputStream.writeFloat((float) Math.random() * 10);
                dataOutputStream.writeFloat((float) Math.random() * 10);
                dataOutputStream.writeFloat((float) Math.random() * 10);
            }

            try (DataInputStream dataInputStream = new DataInputStream(new FileInputStream(fileName))) {

                float theFloatSum = 0;
    
                while (dataInputStream.available() > 0) {
                    float nextFloat = dataInputStream.readFloat();
                    System.out.println(nextFloat);
                    theFloatSum += nextFloat;


                }
                System.out.println(theFloatSum);
                
            } catch (EOFException e) {
                System.out.println("End of file was read. ");
            }


        } catch (IOException e) {
            e.printStackTrace();
        }


    }
}