//program Kevin Chen
//program CISC 1115 My2
//program HW#7CountZeros

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

public class hw7countzeros {

		public static void main(String[] args) throws IOException //added throw clause
		{
			//reference to an output file
			PrintWriter outputFile = new PrintWriter("myoutput.txt");

			//declare variables
			int size;

			//create new array
			int[]numbers = new int[100];

			//call method readdata
			size = readData(numbers, outputFile);

			//call method countzeros
			int zero = countZeros(size, numbers, outputFile);
			outputFile.println("It has " + zero + " zero values");

			Scanner keyboard1 = new Scanner(new File("testing.txt"));

			//call method append
			append(size, numbers, outputFile, keyboard1);

			outputFile.close();

		}
		/*
		 * Input:
		 * vals- reference to an array of integers
		 * myout- reference to an PrintWriter output file
		 * Process:
		 * reads in integers from a inputFile and stores it in the val array
		 * counts how many integers were read into the array
		 * Output:
		 * prints the data values read in and count to the outputFile
		 * returns the array and the total numbers of value read in
		 */

		public static int readData(int[]vals, PrintWriter outputFile) throws IOException {
			File inputFile = new File("C:\\Users\\Kevin Chen\\eclipse-workspace\\Work\\myinput.txt");
			Scanner keyboard = new Scanner(inputFile);

			//declare variables
			int x = 0;

			//reads in integers
			while (keyboard.hasNextInt())
			{
				vals [x] = keyboard.nextInt();
				outputFile.print(vals[x] + " ");
				System.out.println(vals[x]);
				x++;
			}
			outputFile.println();
			outputFile.println("n = " + x);
			return x;
		}
		/*
		 * Input:
		 * vals - reference to an array
		 * n - number of integers
		 * Process:
		 * counts how many first n elements of vals array are 0
		 * Output:
		 * return the amount of first n elements of vals array that are 0
		 */

		public static int countZeros(int n, int[] vals, PrintWriter outputFile)
		{
			//declare variables
			int num = 0;

			for (int index = 0; index < n; index++) {
				if (vals[index] == 0) {
					num++;
				}
			}
			return num;
		}
		/*
		 * Input:
		 * vals - reference to an array
		 * n - number of integers
		 * Process:
		 * reads in new values into array then append them at the end
		 * changes value of n and the array
		 * Output:
		 * returns new total number of data stored in array
		 */

		public static void append(int n, int[]vals, PrintWriter outputFile, Scanner keyboard1) throws IOException
		{


			int count=0;
			int count2 =0;
			int [] array = new int [100];
			for (int sd = 0; sd <= 3; sd++) {

			int y = keyboard1.nextInt();
			array[count]= y;
			System.out.println(array[count]);
			count++;
			}



			int [] array2 = new int [n+count];
			for(int j=0; j < count; j++){
			    array2[n+count2]=array[j];
			}
			for(int i =0; i<vals.length;i++) {
			    array2[i]=array[i];
			}

		}
}