如果我没有为指针分配新值，是否需要删除它? [英] Do I need to delete a pointer if I haven't assigned it a new value?

问题描述

一个简单的问题:

如果我实际上没有为它分配一个新值，是否需要删除一个指针?

Do I need to delete a pointer if I haven't actually assigned a new value to it?

如果创建了一个指针，然后将其交给了类似的引用，我该怎么做:

What I've done if created a pointer and then handed it a reference to something like so:

Planet *planetPointer;

planetPointer = &earth;

我需要删除该指针还是可以将其设置为null?

Do I need to delete this pointer or can I just set it to null?

推荐答案

您不需要删除它，此外，您不应该删除它.如果earth是自动对象，它将被自动释放.因此，通过手动删除指向它的指针，您将进入未定义的行为.

You don't need to delete it, and, moreover, you shouldn't delete it. If earth is an automatic object, it will be freed automatically. So by manually deleting a pointer to it, you go into undefined behavior.

仅delete您使用new分配的内容.

这篇关于如果我没有为指针分配新值，是否需要删除它?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！