C++, creating a game: Battleship

Our class project is to create a program to play a simple game called Battleship (a popular board game).

The output screen is to show a 10x10 grid. Each element of the grid will display white 's in all 100 spaces. The user can a ship (for example, a submarine would use 4 , either horizontal or vertical).
When the opponent a occupied by the user's ship, a red would replace the . If the opponent misses, a yellow would replace the original white . I would like a very simple program to display this grid and perform those tasks.

Please include plenty of comments and use the simplest form of programming possible.

Thanks!