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Asked: 2026-05-13T16:30:10+00:00

I have been making several games with the Allegro API and C++. I have

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I have been making several games with the Allegro API and C++. I have also been putting all my classes in 1 big main.cpp file. I tried many times to make .h and .cpp files, but my big problem is I have trouble with #including at the right place. For example, I want all my classes to access the allegro library without #including allegro.h everywhere. Could someone please explain how to correctly #include things. In .Net, everything seems to come together, but in c++ one thing cannot be used before it is included. Is there also a way to globally include something throughout my entire program?
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  1. Editorial Team

    I want all my classes to access the allegro library without #including allegro.h everywhere.

    Why? That is how you do it in C++ land.

    Could someone please explain how to correctly #include things. In .Net, everything seems to come together, but in c++ one thing cannot be used before it is included

    Conceptually, in .NET, it is not much different at all. You still have to place “using ” at the top. The difference there is that, in .NET, you could also write this every time if you wanted to:

    void Foo( System.Drawing.Drawing2D.BitmapData bData ) { }
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