Member Avatar for littletimmy

If a 2d array is allocated memory in this fashion, how should it be deleted?

MyObject **lastJobs, **lastMachines ;
lastJobs = new MyObject*[getNbJobs()] ;
lastMachines = new MyObject*[getGreatestMachineNb()] ;

does this suffice:

delete[] lastJobs;
delete[] lastMachines;

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Member Avatar for littletimmy

Thanks Dave,
this is code which I am tryig to understand however. In the above example while it is declared as a 2-d array it is only allocated memory in one direction. Does this make a difference. To be more clear, should I delete it as 1d or 2d array?

Thanks
P.

Member Avatar for Dave Sinkula

You delete what you new, and you delete[] what you new[].

In what you posted, I see what might be an attempt to allocate two 2-dimensional arrays, but only one dimension appears to be allocated for each. The second dimension of each 2-dimensional array is not yet allocated. So I believe these "rows" are each deallocated correctly in the code you've shown, but the "columns" were never allocated nor deallocated.

Member Avatar for littletimmy

Thats great again Dave!
One last question (open to all-takers!!): If memory is allocated in the copy constructor using new must it also be deleted somewhere? The copy sonstructor isn't a special case for some reason!?!?

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