Header file

#1

Header files have .h extension, but iostream do not have such extension. But iostream is a header file. How?

#2

hi @discobot
hi no wrong,
iostream.h is deprecated by those compilers that provide it, iostream is part of the C++ standard.

#3

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#4

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#5

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#6

Sir, a file must have some extension but iostream do not have any extension how?

#7

hi @discobot
authors of that code decided to follow the patterns of the C++ standard library. In standard C++, library headers are not supposed to have the .h extension. So the following is correct:

#include <iostream>
#8

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#9

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