import java.util.Scanner;

public class ReadInNumbersProgram2 {
	public static final int		GROWTH_SIZE = 5;  // Amount to grow array by

	// Function to make the array bigger
	public static int[] enlarge(int[]  originalArray, int amountToIncreaseBy) {
		// First, create the bigger array
		int[]	enlargedArray = new int[originalArray.length + amountToIncreaseBy];

		// Now copy over all the values
		for (int i=0; i<originalArray.length; i++)
			enlargedArray[i] = originalArray[i];

		return enlargedArray;
	}

	public static void main(String[] args) {
		int[] 	numbers = new int[5];
		int   	count = 0;
		int		enteredValue = 0;

		while (enteredValue != -1) {
			System.out.print("Enter number " + (count+1) + ": ");
			enteredValue = new Scanner(System.in).nextInt();
			if (enteredValue != -1) {
				if (count == numbers.length) {
					// Change the numbers variable to point to the new/bigger array
					numbers = enlarge(numbers, GROWTH_SIZE);
				}
				numbers[count++] = enteredValue;
			}
		}

		// Print out the array, as a test
		for (int i=0; i<numbers.length; i++)
			System.out.print(numbers[i] + ", ");
		System.out.println();
	}
}