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OK, I have done some looking around but to nothing.
As I have been learning C++, I have been told by some to have my includes stored into the .h file is available, and by others, to keep them in the .cpp file.
My question is what is the preferred industry standard and why?
Includes in the .cpp are only included when that one file is compiled, but the includes for the .h are to included everytime it the file is invoked.
Hence putting your includes in cpp files will most likely speed up compilation (less cross-referencing)
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I want to be able to use OpenGL types i.e. GLenum, GLuint, GLint etc. in my header files but I would like to avoid including glad.h (avoid including it in the HEADER files, but it will be included in .cpp files) to make sure OpenGL calls cannot be made if someone includes my file. I believe a concept like "fundamental type forward declaration" would do the trick - this is obviously not a thing.
Code example (image to allow syntax errors highlight):
You can provide typedefs for these separate from the GLAD headers. The simplest approach would be to just copy-and-paste the entire portion of the GLAD header the declares the typedefs (for all platforms) into a forward declaration header.
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I'm still learning about using COM objects.
I'm trying to figure out where the values of CLSID_FileOpenDialog and IID_IFileOpenDialog are defined: https://learn.microsoft.com/en-us/windows/win32/learnwin32/example--the-open-dialog-box
I couldn't find them in the included header files.
From one example I saw, I figured that I'd need .c and .h files with the interface and class GUIDs, but I couldn't find any reference of them for online.
They are declared as extern variables in ShObjIdl_core.h, which is included by ShObjIdl.h, which the example you linked to is including.
The actual values are defined in uuid.lib, which your project needs to link to, otherwise you will get linker errors when it can't resolve the variables.
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I have read many places that bits/stdc++.h contains all the header files that are useful in competitive programming, for saving time.
Can anyone give me any source for it or give the list in the of its header files?
You can open the file in the path where your all the c++ header files are kept. (Locate the file stdc++.h).
Or you can get one of the versions of the file in the link described here:
stdc++.h
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I am a newbie programmer in C++, I already know that I can use extern keyword to access functions and global variables on the other files in my project but the problem that I faced to, is that how can I use structs, enums placed (available in other files of my project) in my current .cpp file?
T.I.A
You should declare them in a header file, then #include them when you need them. You can still define them in a cpp file.
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is it possible to merge objective c project with c++ project aurioTouchhttp://developer.apple.com/library/ios/#samplecode/aurioTouch/Introduction/Intro.html
Yes, because: There is no such thing as an "Objective-C project" or "Objective-C++ project", there are just projects that contain source files.
You can mix Obj-C, Obj-C++, C, and C++ source files all in one project, and (in general) Xcode will do the right thing. Do you have a specific problem?