[Mono-list] Some C# problems
Piers Haken
piersh@friskit.com
Mon, 5 Aug 2002 16:34:51 -0700
Works ok for me on .net.
I seem to remember someone mentioning a bug in rectangular arrays a
while back, maybe it's not fixed yet?
piers.
-----Original Message-----
From: Kenneth Christiaansen [mailto:kenneth@gnu.org]
Sent: Monday, August 05, 2002 3:48 PM
To: mono-list@ximian.com
Subject: [Mono-list] Some C# problems
He everyone,
I am having some problems with the attached code. This is the first I
play
with C# so it might include sillynesses. It compiles fine, but I get the
following failures while running the code:
** (process:31789): WARNING **: unhandled exception
System.NullReferenceException: "A null value was found where an object
instance was required"
in (unmanaged) (managed to native wrapper) System.Array:GetLength (int)
in <0x00004> (managed to native wrapper) System.Array:GetLength (int)
in <0x00079> .Board:.ctor (int)
in <0x0005c> .TicTacToe:Main ()
So if anyone can give me a hint on what I am doing wrong, or tell me
this is
a bug, then please feel free doing so.
Cheers, Kenneth
using System;
class TicTacToe {
class Board {
enum Block {
Circle,
Cross,
None,
};
private Block [,] board;
public Board (int size)
{
board = new Block [size, size];
for (int i = 0; i < board.GetLength (0); i++) {
for (int j = 0; j < board.GetLength (1); j++) {
board [i, j] = Block.None;
}
}
}
public void DrawBoard ()
{
for (int i = 0; i < board.GetLength (0); i++) {
for (int j = 0; j < board.GetLength (1); j++) {
switch (board [i, j])
{
case Block.None:
Console.Write (".");
break;
case Block.Cross:
Console.Write ("X");
break;
case Block.Circle:
Console.Write ("O");
break;
}
}
Console.WriteLine ("");
}
}
}
static public void Main ()
{
Console.WriteLine ("Welcome to Tic Tac Toe");
Board board = new Board (10);
board.DrawBoard ();
}
}
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