BSDF - need an example [closed] - c++

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I'm trying to understand in a simple raytracer what does the BSDF function does and in theory I got it but in practice I don't know how to implement one.
Can someone point me out some simple examples (well-explained if possible) on how to use it?

check PBRT project. It is great book, but if you do not want to read it, there is well documented source code availabe: PBRT

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Filling a dynamic array with integers c++ [closed]

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how to fill a dynamic array with input from the console? Im begginer
and can't understand it.
some help will make my day :|
You can realize this in several ways. Have a look on following post may it will help you..
Using scanf() in C++ programs is faster than using cin?

Programming tests [closed]

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I seeking a web site for programming skills testing. Maybe free analogue of codility or something like when you get a task, and need to upload a correct answer code, solving the task. Namely i interested in c++. Thanks.
your answer is that you should try your self more!
But some goods:
the ACM site: http://icpc.baylor.edu
http://acm.uva.es/contest/
http://www.codeforces.com
http://code.google.com/codejam/
and also
http://www0.us.ioccc.org/index.html
http://www.mycplus.com/featured-articles/programming-contests-and-challenges/

C videos anywhere online [closed]

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Does anyone have any knowledge of C or c++ tutorials that teach the language on video and through examples?
FredOverflow did start such a list (you need enough rep to see deleted questions to see this one) for C++ a while ago, which via some detours ended up on the C++ chat room's wiki: http://loungecpp.wikidot.com/videos-and-podcasts-by-c-celebrities

What are some intermediate level projects to try? [closed]

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What are some intermediate level projects that include the use of Templates, Inheritance, STL should one try to learn their real use? I've read about them in the books but it just don't seem very interesting and it is easily forgettable stuff for me.

Tool for drawing mockup web interfaces [closed]

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What program was used to draw the picture below?
Not a programming question...but I think is balsamiq: http://balsamiq.com/
That looks like it s made with balsamic mockup, it's not free btw.
A great source for wireframing tools can be found here.
Possibly Omnigraffle, an OS X app. See http://graffletopia.com/ for stencils (e.g. http://graffletopia.com/stencils/445)