drawing sqaures using source codes

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hi to all pros..

i'm a noob using KDE C/C++ (Fedora 7). and i had no programming experience in C++. I am required to do a project using this for a floorplan and now i cant even start drawing squares for the rooms using the source codes?

does any kind souls out there pls direct me? ^^
*(like any recommended web sites that i can find relevant sources)*

thx