using System;
namespace TwoDArrayDemo
{
	class Class1
	{
		[STAThread]
		static void Main(string[] args)
		{
			const int X_SIZE = 8;
			const int Y_SIZE = 8;
			
			// Declare the 2-D array of integers.
			int[,] chessBoard = new int[X_SIZE, Y_SIZE];
			
			// Initialize the array with 0s;
			for (int i = 0; i <= chessBoard.GetUpperBound(0); ++i)
			{
				for (int j = 0; j <= chessBoard.GetUpperBound(1); ++j)
				{
					chessBoard[i,j] = 0;
				}
			}
			Print2DArray( chessBoard );
			
			// Fill in some spots.
			chessBoard[5,5] = 1;
			chessBoard[0,0] = 1;
			chessBoard[7,7] = 1;
			chessBoard[2,1] = 1;
			chessBoard[1,2] = 1;
			chessBoard[7,6] = 1;
			Print2DArray( chessBoard );

			// Check to see how many spots are non-zero.
			//
			// What... I can't do it ALL for you folks!  Give it a shot.
		}

		private static void Print2DArray( int[,] someArray )
		{			
			for (int i = 0; i <= someArray.GetUpperBound(0); ++i)
			{
				Console.Write("Row " + i.ToString() + " - ");
				for (int j = 0; j <= someArray.GetUpperBound(1); ++j)
				{
					Console.Write(someArray[i,j].ToString() + " ");
				}
				Console.WriteLine();
			}
		}
	}
}