I am not expertise in C++, I know that these are using to check the current OS. but would like to know the difference.
in project options / Configuration properties / C-C++ /
Preprocessor => Preprocessor Definitions
we define in preprocessor directive as WIN64 and while using in the code we use _WIN64, please clarify with underscore ( _ ) and without underscore in "WIN64" preprocessor directive.
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I’d like to move your thread to off-topic because your question is not related to this forum.
I suggest that you can post in
PCW Forum, there are experts in that forum.
Thank you for your understanding.
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