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What order should headers be declared in a header / cpp file? Obviously those that are required by subsequent headers should be earlier and class specific headers should be in cpp scope not header scope, but is there a set order convention / best practice?
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Does the include order matter? If your header files are self-contained, then the include order technically shouldn't matter at all for the compilation result.
In C++ program has the header file which stands for input and output stream used to take input with the help of “cin” and “cout” respectively. There are of 2 types of header file: Pre-existing header files: Files which are already available in C/C++ compiler we just need to import them.
Yes you can wirte a program without #include , but it will increase the complexity of the programmer means user have to write down all the functions manually he want to use.It takes a lot of time and careful attention while write long programs.
In a header file you have to include ALL the headers to make it compilable. And don't forget to use forward declarations instead of some headers.
In a source file:
In that order you will not miss any of your header files that forgot to include libraries by their own.
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