C ++中delete和delete []之间的区别 [英] The difference between delete and delete[] in C++

问题描述

可能重复:
在C ++中删除vs删除[]运算符

Possible Duplicate:
delete vs delete[] operators in C++

我编写了一个包含两个指针的类，一个是char* color_，另一个在vertexesset* vertex_中，其中vertexesset是我创建的类.在我一开始就写的tract贬不一中

I've written a class that contains two pointers, one is char* color_ and one in vertexesset* vertex_ where vertexesset is a class I created. In the destractor I've written at start

delete [] color_;
delete [] vertex_;

当涉及到析构函数时，它给了我一个分割错误.

When It came to the destructor it gave me a segmentation fault.

然后我将析构函数更改为:

Then I changed the destructor to:

delete [] color_;
delete vertex_;

现在它可以正常工作了.两者有什么区别?

And now it works fine. What is the difference between the two?

推荐答案

delete []设置数组类型时为delete []，否则为delete.例子:

You delete [] when you newed an array type, and delete when you didn't. Examples:

typedef int int_array[10];

int* a = new int;
int* b = new int[10];
int* c = new int_array;

delete a;
delete[] b;
delete[] c; // this is a must! even if the new-line didn't use [].

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