Re: is delete[] necessary?
John Brawley wrote:
Please;
Given something like:
main() {
You forgot to give main a return type.
int * label = new int[123456789];
for(;;)
if ( /* somecondition == true */) { goto end; }
/* do something sane for a long time*/
end:
delete[] label; // is this _necessary_ in this case?
return 0;
}
IOW, if the array[] is used right up until the program terminates, is it
necessary to delete the array[]?
(Does a terminated C++ program 'leave anything behind' that affects the
machine?
The C++ standard doesn't define what happens after your program finished
executing. So it depends on the system and the compiler.
I'm currently programming for a system that won't return any memory after my
program finished. But that doesn't matter much, since my program must never
finish. There is nothing that would "take over" afterwards.
Doesn't termination of a program release any memory that was associated
with it?)
If you are talking about PCs and the like, then usually the system does
automatically re-claim the memory after your program is gone. In that case,
the above program would not leak memory, but it still is considered sloppy
programming by some people, and a memory debugger might flag it as a memory
leak. Also note that destructors aren't executed.
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