Help With Maintaining User Input

Hey, I'm currently working on learning C++ and I've started a project of creating a Tic-Tac-Toe game from scratch. Currently I'm having problems with my user's input getting overrided. I have my variables limited using != , but the rand() sometimes takes the place of a already used user inputted value value.

I uploaded the current file of my project. If you compile and run it a few times you would understand what I mean if you already don't.

Simply put if I wrote X like below:

Code:

 X |   |   
___|___|___
   |   |   
___|___|___
   |   |   
   |   |

Then later in my program it gets replaced:

Code:

 O |   |   
___|___|___
   |   |   
___|___|___
   |   |   
   |   |

Even though, I limited the variables:

Code:

opp_input4 = !(input, input2, input3, input4, opp_input, opp_input2, opp_input3);

So if anyone can tell what I'm doing wrong or what I need to add then that would be very good. I'm almost done with the coding, and this is about the only thing holding me back.

Thanks,
BKW[ATTACH]TTT.cpp[/ATTACH]

Originally Posted by BKW++

Even though, I limited the variables:

Code:

opp_input4 = !(input, input2, input3, input4, opp_input, opp_input2, opp_input3);

Is this legal syntax for checking against numerous cases?

Originally Posted by neandrake

Is this legal syntax for checking against numerous cases?

It is legal syntax, but it probably doesn't do what the original poster wanted, as

Code:

opp_input4 = !(input, input2, input3, input4, opp_input, opp_input2, opp_input3);

is equivalent of:

Code:

input, input2, input3, input4, opp_input, opp_input2;
opp_input4 = !(opp_input3);

The first of those two lines is completely pointless (except the compiler MAY cause some memory read operations to access the varaibles...)

--
Mats