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Home » Tip Bank » C++
Language: C++
Expertise: Beginner
Jun 4, 2001

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Make Sure You Don't Leave Pointers to Deleted Things Hanging Around


The following macros will facilitate this task and have been very useful:
 
#define SAFEDELETE(p) if(p) { delete p; p =NULL;}
#define SAFEDELETE_ARRAY if(p) { delete [] p; p = NULL;}
How to use-
int main()
{
    int *i  = new int;
    char *ptr = new char[100];
    // do something with ptr
    SAFEDELETE_ARRAY(ptr);
    SAFEDELETE(i);
}
Prateek Bidwalkar
 
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