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Editorial Team
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Asked: 2026-06-14T23:48:14+00:00

I have a question and I could not find a solution, so I ask

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I have a question and I could not find a solution, so I ask here 🙂

I want to create an Foundation-based terminal application/script using Xcode–>Mac–>New–>Command Line Tool–>Foundation

This works and all, but then I want to ADD header.h files to my project.
One of this header.h files does the following:

#include <iostream>

This fails with the error: iostream file not found.

For a test I make a new c++ based terminla script and it does exactly the same:

#include <iostream>

But for some unknown reason it does not fail with an error.
Can anyone tell me, why the c++ script works to include and the objective c not?

objective c: .h file
c++: .cpp file
I renamed the .h to .cpp but then it does not find the NSString and such things.. any solution to use iostream and objective c?

I really need that, thanks

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1 Answer

  1. Editorial Team

    If you want to use both Objective-C and C++ (called Objective-C++) from within the same source module, then use the .mm file extension.

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