如何正确删除指向数组的指针 [英] how to properly delete a pointer to array

问题描述

我是C ++的新手，我对数组和指针感到困惑。有人告诉我如何可以正确删除指针。例如，

I'm new to C++, and I'm confused about arrays and pointers. Could someone tell me how I can properly delete a pointer. Like for example,

int *foo;
foo = new int[10];

delete foo;

或

delete [] foo;

谢谢。

推荐答案

匹配new []和delete []的要求在技术上是正确的。

然而，更好的是，忘记你甚至听说过新的[]，而不再使用它。我很确定自从上次使用新的[]以来已经（至少）10年了，如果我很好地理解这种情况，我会停止甚至更早。几乎任何时候，你甚至考虑使用新的[]，std :: vector（或者可能std :: deque）将是一个更好的选择。

The requirement to match new[] with delete[] is technically correct.

Much better, however, would be to forget that you ever even heard of new[], and never use it again. I'm pretty sure it's been (at least) 10 years since the last time I used new[], and if I'd understood the situation very well, I'd have stopped even sooner than that. Pretty nearly any time you'd even consider using new[], an std::vector (or possibly std::deque) will be a better choice.

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