Look for assignments to write

Im always rummaging through this forum looking for assignment i can write. Ive solved a good amount of project Euler but i feel that only helps me with math logic(loops and common sense). Is there a website i can go to that offers a list of assignments people can write just for practice? Thanks for the help!
Maybe this is something along the lines of what you're looking for:

http://www.cplusplus.com/forum/articles/12974/
exactly, thank you very much
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