Objectives

You should write a program that:

• Prints an empty grid at the beginning of the game
• Creates a game loop where the program asks the user to enter the cell coordinates, analyzes the move for correctness and shows a grid with the changes if everything is okay.
• Ends the game when someone wins or there is a draw

You need to output the final result at the end of the game.

Example

The example below shows how your program should work. Notice that after Enter the coordinates: comes the user input.

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|       |
|       |
|       |
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Enter the coordinates: 2 2
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|       |
|   X   |
|       |
---------
Enter the coordinates: 2 2
This cell is occupied! Choose another one!
Enter the coordinates: two two
You should enter numbers!
Enter the coordinates: 1 4
Coordinates should be from 1 to 3!
Enter the coordinates: 1 1
---------
| O     |
|   X   |
|       |
---------
Enter the coordinates: 3 3
---------
| O     |
|   X   |
|     X |
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Enter the coordinates: 2 1
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| O     |
| O X   |
|     X |
---------
Enter the coordinates: 3 1
---------
| O     |
| O X   |
| X   X |
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Enter the coordinates: 2 3
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| O     |
| O X O |
| X   X |
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Enter the coordinates: 3 2
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| O     |
| O X O |
| X X X |
---------
X wins