为什么我们需要在 C++ 中使用 `int main` 而不是 `void main`?

为什么我们需要在 C++ 中使用 int main 而不是 void main?

解决方案

简短的回答，是因为 C++ 标准要求 main() 返回 int.

您可能知道，main() 函数的返回值被运行时库用作进程的退出代码.Unix 和 Win32 都支持进程完成后从进程返回的(小)整数的概念.从 main() 返回一个值为程序员提供了一种指定该值的方法.

Why do we need to use int main and not void main in C++?

解决方案

The short answer, is because the C++ standard requires main() to return int.

As you probably know, the return value from the main() function is used by the runtime library as the exit code for the process. Both Unix and Win32 support the concept of a (small) integer returned from a process after it has finished. Returning a value from main() provides one way for the programmer to specify this value.