battleshipdemo.cs

// Note: Code For LinqPad

void Main()
{
	bool TryGetCoordinates(string cell, out int indexRow, out int indexCol)
	{
		indexRow = -1;
		indexCol = -1;
		if (cell == null)
		{
			return false;
		}
		if (cell.Length != 2)
		{
			return false;
		}
		indexRow = (int)cell[0] - (int)'A';
		indexCol = (int)cell[1] - (int)'1';
		return indexRow < 5 && indexRow >= 0 && indexCol < 5 && indexCol >= 0;
	}
	//Just creating the objects
	var board = new Box[5, 5];
	for(var indexRow = 0; indexRow < 5; indexRow++)
	{
		for(var indexCol = 0; indexCol < 5; indexCol++)
		{
			var box = new Box();
            // // Honestly, we do not need this
			// box.vhID = (((char)(((int)'a') + indexRow))).ToString() + ((char)(((int)'1') + indexCol)).ToString();
		    board[indexRow, indexCol] = box;
		}
	}
	// Placing ships
	var random = new Random();
	var totalShips = 4;
	for (var ships = 0; ships < totalShips; ships++)
	{
		board[random.Next(0, 4), random.Next(0, 4)].hasShip = true;
	}
	// Game loop
	var play = true;
	while(play)
	{
		// Getting the target input
		Box target = null;
		while(true)
		{
			Console.WriteLine("Enter target:");
			var input = Console.ReadLine().ToUpperInvariant().Trim();
			if (TryGetCoordinates(input, out int irow, out int icol))
			{
				Console.WriteLine("Firing...");
				target = board[irow, icol];
				break;
			}
			Console.WriteLine("Invalid coordinate.");
		}
		if (target.hasShip)
		{
			target.hasShip = false;
			totalShips--; // For victory condition
			Console.WriteLine("Ship Destroyed!");
		}
		else
		{
			Console.WriteLine("Nothing.");
		}
		// Victory condition
		if (totalShips == 0)
		{
			Console.WriteLine("You Win!");
			break; // break the game loop
		}
		// Asking if continue playing
		while(true)
		{
			Console.WriteLine("¿Do you want to continue playing (Y/N)?");
			var input = Console.ReadLine().ToUpperInvariant().Trim();
			if (input == "Y")
			{
				break;
			}
			else if (input == "N")
			{
				play = false; // break the game loop
				Console.WriteLine("Game Over.");
				break;
			}
			Console.WriteLine("Invalid input.");
		}
	}
	Console.WriteLine("Thanks for playing!");
}

class Box
{
	// public string vhID{get;set;} // Honestly, we do not need this
	public bool hasShip{get;set;}
}