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Posted on 2000-04-16
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What is memory leak & memory overwrite?(in C or c++)
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Question by:vinusa500
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Toad224 earned 50 total points
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A memory leak is a memory leak in general.  It is not specific toward a certain programming language (as you have stated 'in C'.)

A memory leak is when you load something, and do not close it.  For example (using the Windows API):

HANDLE A = LoadIcon(...);

This will Load the icon into 'A'.  However, this consumes memory.  If you do not call 'CloseHandle' after you have finished using 'A', the memory will not be available for other things, and will still hold the icon information.  Let's say you had a timer, which constantly loaded something without closing it.  It would constantly take up memory.  This is what we call a 'memory leak'.  Eventually, there will be no memory left, and could cause General Protection Faults (Windows) or Kernel Panics (Linux).

A memory overwrite is when you have a variable such as:

LPSTR A[25];

The definition is exactly what it sounds like.  If you accidentally had written over a part of that memory.
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by:Vinay
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i like this answer but will u plz more clerify it in proper C examples using array or pointer notations.
Thanks
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