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Difference between getch () and _getch ()

What is the difference between the two functions that are defined in the conio.h header file -

getch () and _getch ().

Is there any difference in decoding? Or is it just a difference due to updated standards?

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This is part of Microsoft’s decision a few years ago to more strictly interpret the C ++ standard. It says that all names in the global namespace that begin with an underscore are reserved for use by the implementation. This means that getchit is not a reserved name, but _getchis.

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