为什么C ++不支持变长数组？ [英] Why does C++ not support Variable-length arrays?

问题描述

可能重复：结果
  用C 变长数组++？

我只是好奇，有没有什么特别的原因C ++不允许变长数组？

I am just curious, is there any particular reason why C++ does not allow variable length arrays?

推荐答案

两个原因：

1. C ++是基于C89（如1989年出版的C标准）。沃拉斯只在C99推出。


2. C ++有的std ::矢量＆lt;＆GT; 和一大堆其他的容器，这就是为什么我相信C ++决不会与沃拉斯打扰。它已经有了他们的时候沃拉斯被发明了C.

1. C++ is based on C89 (the C standard as published in 1989). VLAs were only introduced in C99.
2. C++ has std::vector<> and a whole bunch of other containers, which is why I believe that C++ will never bother with VLAs. It already had them when VLAs were invented for C.

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