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I'm trying to make a fractal image in C. What is the best way to convert a computed matrix to an image? Is there a built-in library or must I use an external one.. if so any suggestions?
The GD library is basic but still quite useful. (It's embedded into the PHP language.)
Or, if you don't want to rely on external libraries, output your data to a text format like PPM, and then convert it to a different format in your favourite graphics editor (or a tool like ImageMagick).
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I need to encrypt a char* string in C using blowfish or twofish in Windows.
I can't find a straight forward solution for that.
I don't want to install something like OpenSSL; I need it be a standalone as possible.
Unfortunately Googling for C code results in C# and C++ code.
Can anyone give me a straightforward function for encryption/decryption?
Have you taken a look at "https://www.schneier.com/twofish-download.html" on Bruce Schneier web site? He has reference implementations, as well as optimized implementations of the algorithm. It's been a few years since I looked at it, but you might find it useful.
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Is there a tool available to do so, for x86 programs that is. What I want is for that tool to take the binary executable as an input and show me a control flow graph.
IDA can produce nice control-flow graphs, both for individual functions and the whole program.
You can try out freeware or demo version.
Disclaimer: I work for Hex-Rays.
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I want to learn how C is interpreted,
anyone knows where to download it?
http://www.thefreecountry.com/compilers/cpp.shtml
I found that in about 10 seconds using Google. You can too.
A good basic compiler suitable for getting an intro to the subject and including sources is tinyc. It is capable of being used in a similar manner as an interpreter, too (unlike GCC et al).
http://gcc.gnu.org/releases.html
Try this:
http://en.wikiversity.org/wiki/C
and this:
http://gcc.gnu.org/
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Are there any C-language static analysers out there that create graphical diagrams of the data structures in a body of C code?
I'm thinking along the lines of the data displays in the DDD (Data Display Debugger) but that work from static analysis of the source code.
Any diagram notation welcome (UML etc.) and it can run on any platform.
Thanks.
Take a look at Enterprise Architect. It is fairly inexpensive and does just this and comes with a 30 day free trial. And no, I don't work for them :) .
Understand is also a great tool for diagraming existing C / C++ code, to help you understand it.
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I'm looking for some library that will allow me to identify black dots on a white background. Preferably in C or objective-c.
Also, what keywords can I use in my search for such algorithms? I've found a lot of stuff about image recognition but nothing that ressembles what I'm looking for.
thanks!
I think there is a possibility to use OpenCV in obj-c
The general API can be found at: http://opencv.willowgarage.com/
OpenCV vs. Apple iPhone article shows 2 approaches to get OpenCV on iPhone, may be what you're looking for.
You can try imagemagick.
http://www.imagemagick.org/