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// Item 7: Declare destructors virtual in polymorphic base classes. pg-40

class Time {

public:

	Time();

	~Time();		// rule 7

};

class Fire : public Time {

};

Function Name: m7() 
m7() {
Time *pt= getTime();
delete pt;

}

class Time1 {

public:

	Time1();

	virtual ~Time1() {	}

Function Name: Time1() 

};

Function Name: Time1() 

virtual Time1::~Time1() {	}

class Water : public Time1 {

};

Function Name: m7a() 
m7a() {
Time1 *pt= getTime();
delete pt;

}

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