/* 
This is a program that demonstrates arrays: declaration, reading and writing.

Laura Toma
csci 101

*/


public class ReadArray {
	
	public static void main (String args[]) {

		//setting up the variable that reads from user
		ReadStream r = new ReadStream();

		int nbElements; 
		System.out.println("Please enter the number of elements: ");
		nbElements = r.readInt();
		r.readLine();
		
		//declare an array of that many elements
		int a[] = new int [nbElements];
		
		//Note: after the array is declared, it knows its size; we can get
		//it with a.length
		
		//read the elements in the array from the user; to do this we
		//set up a counter, and we make it go through all positions of
		//the elements in the array
		int i = 0;
		while (i < a.length) {
			System.out.println("Enter element " + i + ": ");
			a[i] = r.readInt();
			r.readLine();
			i = i+1;
		}
		
		//the array stores the elements we entered

		//What can we do with the array? For example, we can print the
		//elements in the array; for this, again, we need a counter 
		i = 0; 
		while (i < a.length) {
			System.out.println("Element " + i + "=" + a[i]);
			i = i+1;
		}
		
		
	} // end of main
	
} // end of class