在ISO C ++中/反对从main返回0的原因是什么? [英] What the reasons for/against returning 0 from main in ISO C++?

问题描述

我知道C ++标准规定，如果未给出return语句，则在 main()的末尾插入 return 0 .但是，我经常看到最近编写的，符合标准的C ++代码，该代码在 main()的末尾显式返回0.出于什么原因，如果编译器自动完成，有人想显式地返回0?

I know that the C++ standard says that return 0 is inserted at the end of main() if no return statement is given; however, I often see recently-written, standard-conforming C++ code that explicitly returns 0 at the end of main(). For what reasons would somebody want to explicitly return 0 if it's automatically done by the compiler?

推荐答案

因为看起来很奇怪，无法从具有非无效返回类型的函数中返回"某些内容(即使该标准说严格没有必要).

Because it just looks weird to not "return" something from a function having a non-void return type (even if the standard says it's not strictly necessary).

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