What are the storage classes of functions?

What is the storage class of the function? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something.

There are two storage classes for C++ functions, which are external functions and internal functions, in which the storage class description of [external] function can not be omitted and the specifier is [extern].

There are two storage classes of C++ functions, which are external functions and internal functions, in which the storage class description of (external) functions cannot be omitted. The specifier is (extern).

Related introduction:

C++ is the inheritance of C language. it can not only carry out procedural programming of C language, but also object-based programming characterized by abstract data types. it can also carry out object-oriented programming characterized by inheritance and polymorphism. While C++ is good at object-oriented programming, it can also carry out process-based programming, so C++ depends on the scale of the problem it adapts to.

C++ not only has the practical characteristics of efficient computer operation, but also strives to improve the programming quality of large-scale programs and the problem description ability of programming languages.

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