Hello everyone,
I think unmanaged resource means the resources (e.g. memory and file handler) which is used directly (new, FILE*) other than using a wrapper class (Resource Acquisition Is Initialization) or auto_ptr to wrap it. Is my understanding correct?
Here is a sample about what is unmanaged resource.
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http://www.gotw.ca/gotw/066.htm
Moral #3: Always perform unmanaged resource acquisition in the constructor body, never in initializer lists. In other words, either use "resource acquisition is initialization" (thereby avoiding unmanaged resources entirely) or else perform the resource acquisition in the constructor body.
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thanks in advance,
George
