Delete Array of Pointers

[RichardF]

Hi,

Quick Question:

Is there any diffence between A and B.

I always thought delete[] was used only if you did new MyType[N];

struct MyType {
  int age;
  float weight;
];

MyType* pList[10];
int i;

// new each item in the array
for (i = 0; i < 10; i++) 
    pList[i] = new MyType;

// A. delete the array 
for (i = 0; i < 10; i++)
    delete pList[i];

// or  B. delete the array using delete[]
delete[] pList;

Thanks,
Rich.

 

[Salem]

> Is there any diffence between A and B.
Yes.
A is right, B is wrong.

> I always thought delete[] was used only if you did new MyType[N];
Yes, that's it.

Note that if you had done
[tt]pList = new MyType[4];[/tt]
Then deleting would be
[tt]delete [] pList;[/tt]

Since pList itself is an array of 10 pointers, you don't need to delete pList itself, only each pList

--

 

[PerFnurt]

Just to summarize:

Every new shall have a corresponding delete. No more, no less.

Every new ... [ ] shall have a corresponding delete []. No more, no less.

It's as simple as that.

/Per

_{"It was a work of art, flawless, sublime. A triumph equaled only by its monumental failure."}