Simple arbitrary-size tic-tac-toe game.
ttt was designed and written in response to a challenge from a colleague who
wrote a console tic-tac-toe game in C++. The code was (frankly) written
sloppily, and the program's structure severely limited its
modularity. Furthermore, it was dependent on external commands unique to
Microsoft operating systems (such as
cls to clear the console).
I decided I would rewrite the game using clean C code, require no outside dependencies (besides the standard C library), and allow a board of variable size. I achieved a program with significant improvements in runtime efficiency (measured with controlled tests and inputs on one machine) which could be recompiled to use different board sizes.
I'm very pleased with the result, and I now use this as a test program when developing on new systems.
This program makes for an advanced "hello world" program for aspiring hackers that want a good sample to study and change.
The C code complies with C standards, and it can be compiled and run on any compliant system. It makes use of several standard library features and showcases their uses. Since the code is documented using a standard format, readers can understand a function's purpose before reading it, thus better understanding the code as a whole.
make to automate compilation not because compiling is hard (I could
easily have written the instructions in this README file) but as a "hello
world" for Makefiles, since hackers will no doubt need build automation tools
for their more significant software.
Since the source is controlled using Git, I also provided a way for new hackers to practice using Git and learn the advantages of source control. It also allows them to easily submit their changes and improvements to me to benefit future hackers.
You will need a standards-compliant C compiler, the standard C library with
header files, and
make. On Debian GNU/Linux and derivatives, you can install
# apt-get install build-essential
After that, build with
If you want to install this program, just run
# make install
The board is labeled with coordinates of letters and numbers. When placing a
move, write the letter and then the number. For example, to put your mark in
the very first cell, type
a0 as your position.
Match the style you see in the source code. Do not use spaces for
indentation. All functions and fields outside of
main() should be documented
using Doxygen comment formatting.
Avoid depending on external libraries with your changes. You will need to discuss with me (David McMackins II) if you want new dependencies to be added to the main program.
ttt is free software, released under the terms of version 0.5 of the Copyfree Open Innovation License. You are free to copy, modify, and redistribute this software and use it for whatever purpose. See COPYING for more details.