Question

这是我想澄清的事情。我有另一个显示链接的功能。调用该显示功能后，我的控制台上出现了垃圾值。但当我评论“删除临时”声明它工作正常，我得到了预期的结果。请帮忙。谢谢。

void MyLinkedList::insertFirst(double data){
    MyLink *temp = new MyLink(data);
    temp->next = first;
    first = temp;
    delete temp;
}

Answer 1

删除操作符不是用于删除指针本身，而是用于删除它指向的内存。

 MyLink *temp = new MyLink(data); //allocate space for a MyLink dataType
 first=tmp; //temp still points to the allocated space
 delete temp; //deallocate the memory space pointed by temp which is the same memory space pointed by first.

删除它并在c ++中再次分配新内存后指针是否获得相同的内存地址？

1 个答案: