在C ++中应用删除操作符后，地址会发生什么？ [英] What happens to an address after delete operator has been applied to it in C++?

问题描述

如果我删除一个指针，如下所示：

If I delete a pointer as follows for example:

delete myPointer;

然后，不指定 0 到指针如下：

And, after that did not assign 0 to the pointer as follows:

myPointer = 0; //skipped this

将 myPointer 到另一个内存地址？

推荐答案

不，在大多数实现中它将存储与以前相同的地址 - delete 通常不会更改地址，除非您分配一个新的地址值，它保持不变。但是，这不是始终保证。

No, in most implementations it will store the same address as previously - delete usually doesn't change the address and unless you assign a new address value it remains unchanged. However this is not always guaranteed.

不要忘记， delete 的任何东西， / code> d指针是未定义的行为 - 您的程序可能会崩溃或不正常行为。

Don't forget, that doing anything except assigning a null pointer or another valid pointer to an already deleted pointer is undefined behavior - your program might crash or misbehave otherwise.

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