Connect Four 1.1 | C# Online Compiler

Connect Four 1.1 by ChristianJS

using System;

namespace ConnectFour
{
	public class Program
	{
		static char[,] grid = new char[6, 7];

		public void Main()
		{
			for (int row = 0; row < grid.GetLength(0); row++)
			{
				for (int column = 0; column < grid.GetLength(1); column++)
				{
					grid[row, column] = '.';
				}
			}

			while (true)
			{
				bool win = PlayerX();
				if (win)
					break;
				else
					win = PlayerO();
				if (win)
					break;
			}

			Console.WriteLine("Game over!");
		}

		static bool PlayerX()
		{
			DisplayGrid();

			char x = 'X';
			short columnChoice = 0;

			try
			{
				Console.WriteLine("\n\n[Player X] Drop an X token into column #: ");
				string columnString = Console.ReadLine();
				columnChoice = Convert.ToInt16(columnString);
				columnChoice--;
			}
			catch (FormatException)
			{
				Console.WriteLine("That's not a number!");
			}
			catch (OverflowException)
			{
				Console.WriteLine("That number is too large!");
			}

			bool win = UpdateGrid(columnChoice, x);
			if (win == true)
				DisplayGrid();
			return win;
		}

		static bool PlayerO()
		{
			DisplayGrid();

			char o = 'O';
			short columnChoice = 0;

			try
			{
				Console.WriteLine("\n\n[Player O] Drop an O token into column #: ");
				string columnString = Console.ReadLine();
				columnChoice = Convert.ToInt16(columnString);
				columnChoice--;
			}
			catch (FormatException)
			{
				Console.WriteLine("That's not a number!");
			}
			catch (OverflowException)
			{
				Console.WriteLine("That number is too large!");
			}

			bool win = UpdateGrid(columnChoice, o);
			if (win == true)
				DisplayGrid();
			return win;
		}

		static bool UpdateGrid(short column, char x_or_o)
		{
			short row = 0;

			// Place X or O at lowest point of column.
			if (grid[0, column] == '.')
			{
				if (grid[1, column] == '.')
				{
					if (grid[2, column] == '.')
					{
						if (grid[3, column] == '.')
						{
							if (grid[4, column] == '.')
							{
								if (grid[5, column] == '.')
								{
									grid[5, column] = x_or_o;
									row = 5;
								}
								else
								{
									grid[4, column] = x_or_o;
									row = 4;
								}
							}
							else
							{
								grid[3, column] = x_or_o;
								row = 3;
							}
						}
						else
						{
							grid[2, column] = x_or_o;
							row = 2;
						}
					}
					else
					{
						grid[1, column] = x_or_o;
						row = 1;
					}
				}
				else
				{
					grid[0, column] = x_or_o;
					row = 0;
				}
			} // End if

			//Check if the move caused the player to win
			try
			{
				if (grid[row+1, column] == x_or_o)
				{
					if (grid[row+2, column] == x_or_o)
					{
						if (grid[row+3, column] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException){}
			
			try
			{
				if (grid[row+1, column+1] == x_or_o)
				{
					if (grid[row+2, column+2] == x_or_o)
					{
						if (grid[row+3, column+3] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException) {}
			
			try
			{
				if (grid[row+1, column-1] == x_or_o)
				{
					if (grid[row+2, column-2] == x_or_o)
					{
						if (grid[row+3, column-3] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException) {}
			
			try
			{
				if (grid[row, column+1] == x_or_o)
				{
					if (grid[row, column+2] == x_or_o)
					{
						if (grid[row, column+3] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException) {}
			
			try
			{
				if (grid[row, column-1] == x_or_o)
				{
					if (grid[row, column-2] == x_or_o)
					{
						if (grid[row, column-3] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException) {}
			
			try
			{
				if (grid[row-1, column+1] == x_or_o)
				{
					if (grid[row-2, column+2] == x_or_o)
					{
						if (grid[row-3, column+3] == x_or_o)
						{
							return true;
						}
					}
				}
			}
			catch (IndexOutOfRangeException) {}
			
			try
			{
				if (grid[row-1, column-1] == x_or_o)
				{
					if (grid[row-2, column-2] == x_or_o)
					{
						if (grid[row-3, column-3] == x_or_o)
						{
							return true;
						}
					}
				} // End if
			}
			catch (IndexOutOfRangeException) {}
			return false;
		} // End UpdateGrid method.

		static void DisplayGrid()
		{
			Console.Clear();
			
			for (int i = 0; i < grid.GetLength(1); i++)
			{
				Console.Write(i + 1 + " ");
			}
			Console.WriteLine();

			for (int row = 0; row < grid.GetLength(0); row++)
			{
				for (int column = 0; column < grid.GetLength(1); column++)
				{
					Console.Write(grid[row, column] + " ");
				}
				Console.WriteLine();
			}
		}
	}
}

​x
 
using System;
​
namespace ConnectFour
{
    public class Program
    {
        static char[,] grid = new char[6, 7];
​
        public void Main()
        {
            for (int row = 0; row < grid.GetLength(0); row++)
            {
                for (int column = 0; column < grid.GetLength(1); column++)
                {
                    grid[row, column] = '.';
                }
            }
​
            while (true)
            {
                bool win = PlayerX();
                if (win)
                    break;
                else
                    win = PlayerO();
                if (win)
                    break;
            }
​
            Console.WriteLine("Game over!");
        }
​
        static bool PlayerX()
        {
            DisplayGrid();
​
            char x = 'X';
            short columnChoice = 0;
​
            try
            {
                Console.WriteLine("\n\n[Player X] Drop an X token into column #: ");
                string columnString = Console.ReadLine();
                columnChoice = Convert.ToInt16(columnString);
                columnChoice--;
            }
            catch (FormatException)
            {
                Console.WriteLine("That's not a number!");
            }
            catch (OverflowException)
            {
                Console.WriteLine("That number is too large!");
            }
​
            bool win = UpdateGrid(columnChoice, x);
            if (win == true)
                DisplayGrid();
            return win;
        }
​
        static bool PlayerO()
        {
            DisplayGrid();
​
            char o = 'O';
            short columnChoice = 0;
​
            try
            {
                Console.WriteLine("\n\n[Player O] Drop an O token into column #: ");
                string columnString = Console.ReadLine();
                columnChoice = Convert.ToInt16(columnString);
                columnChoice--;
            }
            catch (FormatException)
            {
                Console.WriteLine("That's not a number!");
            }
            catch (OverflowException)
            {
                Console.WriteLine("That number is too large!");
            }
​
            bool win = UpdateGrid(columnChoice, o);
            if (win == true)
                DisplayGrid();
            return win;
        }
​
        static bool UpdateGrid(short column, char x_or_o)
        {
            short row = 0;
​
            // Place X or O at lowest point of column.
            if (grid[0, column] == '.')
            {
                if (grid[1, column] == '.')
                {
                    if (grid[2, column] == '.')
                    {
                        if (grid[3, column] == '.')
                        {
                            if (grid[4, column] == '.')
                            {
                                if (grid[5, column] == '.')
                                {
                                    grid[5, column] = x_or_o;
                                    row = 5;
                                }
                                else
                                {
                                    grid[4, column] = x_or_o;
                                    row = 4;
                                }
                            }
                            else
                            {
                                grid[3, column] = x_or_o;
                                row = 3;
                            }
                        }
                        else
                        {
                            grid[2, column] = x_or_o;
                            row = 2;
                        }
                    }
                    else
                    {
                        grid[1, column] = x_or_o;
                        row = 1;
                    }
                }
                else
                {
                    grid[0, column] = x_or_o;
                    row = 0;
                }
            } // End if
​
            //Check if the move caused the player to win
            try
            {
                if (grid[row+1, column] == x_or_o)
                {
                    if (grid[row+2, column] == x_or_o)
                    {
                        if (grid[row+3, column] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException){}
            
            try
            {
                if (grid[row+1, column+1] == x_or_o)
                {
                    if (grid[row+2, column+2] == x_or_o)
                    {
                        if (grid[row+3, column+3] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException) {}
            
            try
            {
                if (grid[row+1, column-1] == x_or_o)
                {
                    if (grid[row+2, column-2] == x_or_o)
                    {
                        if (grid[row+3, column-3] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException) {}
            
            try
            {
                if (grid[row, column+1] == x_or_o)
                {
                    if (grid[row, column+2] == x_or_o)
                    {
                        if (grid[row, column+3] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException) {}
            
            try
            {
                if (grid[row, column-1] == x_or_o)
                {
                    if (grid[row, column-2] == x_or_o)
                    {
                        if (grid[row, column-3] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException) {}
            
            try
            {
                if (grid[row-1, column+1] == x_or_o)
                {
                    if (grid[row-2, column+2] == x_or_o)
                    {
                        if (grid[row-3, column+3] == x_or_o)
                        {
                            return true;
                        }
                    }
                }
            }
            catch (IndexOutOfRangeException) {}
            
            try
            {
                if (grid[row-1, column-1] == x_or_o)
                {
                    if (grid[row-2, column-2] == x_or_o)
                    {
                        if (grid[row-3, column-3] == x_or_o)
                        {
                            return true;
                        }
                    }
                } // End if
            }
            catch (IndexOutOfRangeException) {}
            return false;
        } // End UpdateGrid method.
​
        static void DisplayGrid()
        {
            Console.Clear();
            
            for (int i = 0; i < grid.GetLength(1); i++)
            {
                Console.Write(i + 1 + " ");
            }
            Console.WriteLine();
​
            for (int row = 0; row < grid.GetLength(0); row++)
            {
                for (int column = 0; column < grid.GetLength(1); column++)
                {
                    Console.Write(grid[row, column] + " ");
                }
                Console.WriteLine();
            }
        }
    }
}

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