Shulou(Shulou.com)06/01 Report--

This article introduces the relevant knowledge of "what is the return value type of the main function in C++". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The return type of the F.46:main function is an integer

Reason (reason)

It's a language rule, but violated through "language extensions" so often that it is worth mentioning. Declaring main (the one global main of a program) void limits portability.

This is the guideline of the language itself, but since violations of this guideline through "language extension" are very common, it is necessary to remind them. Defining the main function (the only global main function of the program) as void limits portability.

Example (sample)

Void main () {/ *... * /}; / / bad, not C++

Int main () {std::cout

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