Question

Define an example of inheritance with a base class that has 2 attributes, 2 derived classes that each have 2 attributes. Implement this in C++. Create a driver program that creates instances of both of the derived classes and exercises the classes’ member functionsl.

Student answer should include the following:

• 1 base class with 2 attributes, 2 constructors (default and with parameters), get/set methods for each attribute, and display methods
• 2 derived classes with 2 attributes, 2 constructors (default and with parameters), get/set methods for each attribute and display methods
• Any other member functions that are appropriate to the context of the class.

Answer 1

Answer:

Explanation:

Parent class is defined and Child1 and Child2 are derived from the parent class.

Each class is having two attributes, name and dob alongwith all the getters and setters and a display function for all of them.

In the main function, 2 instances are created of the derived classes and functions are called.

Code:

#include <iostream>

using namespace std;

class Parent
{
string name;
int dob;
  
public:
Parent()
{
name="";
dob=0;
}
Parent(string name, int dob)
{
this->name = name;
this->dob = dob;
}
void setName(string name)
{
this->name = name;
}
void setDob(int dob)
{
this->dob = dob;
}
  
string getName()
{
return name;
}
int getDob()
{
return dob;
}
void display()
{
cout<<"Name: "<<name<<endl;
cout<<"DOB: "<<dob<<endl;
}
  
};

class Child1: public Parent
{
string name1;
int dob1;
  
public:
Child1()
{
name1="";
dob1=0;
}
Child1(string name1, int dob1)
{
this->name1 = name1;
this->dob1 = dob1;
}
void setName1(string name1)
{
this->name1 = name1;
}
void setDob1(int dob1)
{
this->dob1 = dob1;
}
  
string getName1()
{
return name1;
}
int getDob1()
{
return dob1;
}
void display()
{
cout<<"Name: "<<name1<<endl;
cout<<"DOB: "<<dob1<<endl;
}
};

class Child2: public Parent
{
string name2;
int dob2;
  
public:
Child2()
{
name2="";
dob2=0;
}
Child2(string name2, int dob2)
{
this->name2 = name2;
this->dob2 = dob2;
}
void setName2(string name2)
{
this->name2 = name2;
}
void setDob2(int dob2)
{
this->dob2 = dob2;
}
  
string getName2()
{
return name2;
}
int getDob2()
{
return dob2;
}
void display()
{
cout<<"Name: "<<name2<<endl;
cout<<"DOB: "<<dob2<<endl;
}
};

int main()
{
Child1 c1("first child", 10102000);
Child2 c2("second child", 10012000);
  
c1.display();
c2.setName2("second");
c2.setDob2(12011981);
  
c2.display();
  

return 0;
}

Output:

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