What is the output of the following code: class Mammal { // Some data members public: Mammal(); ~Mammal(); virtual string ToString()const; }; string Mammal::ToString()const{ return "Mammalia"; class Dog : public Mammal{ // Some data members public: Dog(); -Dog(); virtual string ToString()const; } string Dog::ToString()const{ return "Canis"; } Mammal* m = new Dog); cout <« m->ToString() << endl; delete m; Mammalia Does not compile Mammalia Canis Canis

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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15

What is the output of the following code:
class Mammal {
// Some data members
public:
Mammal();
~Mammal();
virtual string ToString()const;
};
string Mammal::ToString()const{
return "Mammalia";
}
class Dog : public Mammal{
// Some data members
public:
Dog();
-Dog();
virtual string ToString()const;
}
string Dog::ToString()const{
return "Canis";
}
Mammal* m = new Dog();
cout <« m->ToString() <« endl;
delete m;
Mammalia
Does not compile
Mammalia Canis
O Canis
Transcribed Image Text:What is the output of the following code: class Mammal { // Some data members public: Mammal(); ~Mammal(); virtual string ToString()const; }; string Mammal::ToString()const{ return "Mammalia"; } class Dog : public Mammal{ // Some data members public: Dog(); -Dog(); virtual string ToString()const; } string Dog::ToString()const{ return "Canis"; } Mammal* m = new Dog(); cout <« m->ToString() <« endl; delete m; Mammalia Does not compile Mammalia Canis O Canis
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