store a game

[mia123]

Hi I am writting a tic tac toe game and want to know how I can store the last 10 games played.

I will appreciate any help

[LB]

Don't you think you should tackle one problem at a time?

http://www.cplusplus.com/forum/general/149288/

[mia123]

I did not know asking questions will be a problem. they are two different problems here i need to learn how to store a game .

[csstudent123]

answer is through doubly linked list:

make every game played store in a node and point to next game,
keep count,
when count reaches 10 or 20 ie. an increment by 10 save the last ten nodes and delete other.

how to delete:
traverse to start of count from tail and keep on deleteing

makes sense?

[mia123]

Yes I will try to do it.
I am fresh man in another major with little knowledge so I will see what I can find based on what I have learned.
Thanks

[LB]

You don't need any kinds of linked lists at all. A tic-tac-toe game is just a 3x3 grid, you only need a 9-byte file at most.

[mia123]

I really liked the idea of the file. So far I have leraned how to open a file and write on it and tehn open it. in this case I am not sure how it will work. I am working on it, any advise ?

Thanks

[anup30]

file is better idea,
you can save in this format:

game1: XW 11 21 20 02 ....
game2: OW .....
game3: DD .....

in this format you save the whole game(move list). XW= X wins. OW = O wins, DD= draw.
11 21 ... are sequences of moves,

[LB]

Why do you need to store who wins if you also store the complete move set?

[anup30]

if we need statistics of last 10 games, its quicker from result notation.
otherwise, program has to calculate result from move sequence.(and code have to be written for that)

[coder777]

the better question ist: What exactly do you want to store?
The result of the games?
The participants?
What?

[mia123]

I prefer the result of the game. I think it will be perfect if I can ad the new information to the same file instead of having another text file (for example total 10 files). but the problem is that i have not leraned about files and how to write in a file in a program like this.

[coder777]

if I can ad the new information to the same file instead of having another text file

This is not a problem. You just need to determine the format. For instance each line has information for each game.

i have not leraned about files

Use fstream:

http://www.cplusplus.com/reference/fstream/fstream/?kw=fstream

You need to open it, but then you can use it like cin/cout combined

[anup30]

what would be be program to update this file:

0 W
1 D
2 L
3 D
4 D
5 W
6 D
7 L
8 D
9 W

the way i know is,
first, open the file by ifstream;
save the file to string arr[10];
edit arr[10];
close the file;
open the file by ofstream object;
save arr[10] to the file.
close the file.


but, is it possible to open the file in by fstream object and edit it?