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I am currently learning C++ in UE4 or shall I say UE4 C++. I am trying to look at the C++ source code of my project, yet I see something like this void AMyActor::BeginPlay(). I am thinking AMyActor is a namespace but I don´t understand why there is void in front of it.

JaMiT
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Nathan okine
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    Is `void` the return type of the function? – M. Zhang Jan 06 '22 at 00:41
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    You really need to [get a book](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) that explains how `C++` works and study that first. – Galik Jan 06 '22 at 00:41
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    `AMyActor` is most likely a class and `void AMyActor::BeginPlay()` is most likely a function. – drescherjm Jan 06 '22 at 00:41
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    This is like trying to learn how to be come a civil engineer solely by studying the blueprints for the Eiffel Tower. It is necessary to first learn the core fundamentals of C++ by following an organized, methodical, study curriculum in a quality C++ textbook before diving in and trying to understand how an extremely complicated, large C++ code base work, and how it does what it does. – Sam Varshavchik Jan 06 '22 at 00:44
  • UE4 uses "classic" as opposed to "Modern" C++. Getting good with basic C++ is not a lot of study. By that I mean chapters 1 to 7 on "C++ Primer" that @Galik recommended. https://www.amazon.com/Primer-5th-Stanley-B-Lippman/dp/0321714113 –  Jan 06 '22 at 00:53
  • *"I am thinking `AMyActor` is a namespace"* -- the name `AMyActor` suggests that it is defined by your project, which would mean that you should *know* -- not merely think -- what `AMyActor` is. Knowing what your identifiers represent is an important step towards knowing why they are used. This brings up another question -- do you know what `BeginPlay` is? – JaMiT Jan 06 '22 at 00:54

1 Answers1

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I see something like this void AMyActor::BeginPlay(). I am thinking AMyActor is a namespace but I don´t understand why there is void in front of it.

void is a keyword. It is a special type. It cannot be the name of a namespace.

void AMyActor::BeginPlay() is a function declaration. void is the return type of the function.

eerorika
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