Archived

This topic is now archived and is closed to further replies.

sakky

pointer pointer

Recommended Posts

The example is not usefull in any way... but shows
how you can use a double pointer.

int iMaxElements=32;
int** ppIntPointerList;

ppIntPointerList=new int*[iMaxElements];

for (int i=0;i{
ppIntPointerList=new int;
*ppIntPointerList[i]=i;
}

Share this post


Link to post
Share on other sites

vector intPtrVec;

intPtrVec.erase( &intPtrVec[1] ); <-- &intPtrVec[1] is the address of a pointer; that is; a pointer to a pointer.

(It's killing my braces. :/ 'Vector(lessthen)int*(greaterthen) intPtrVec

You use pointers to pointers when you need to manipulate the pointer like a regular value, or need it to be treated as the value rather then the address of one.

Also; that code causes a memory leak. The pointer to the int is erased, but the int itself is never deleted.


[edited by - deyja on August 13, 2002 9:56:27 AM]

Share this post


Link to post
Share on other sites