Virtual Function Implementation in C++ Programming

Virtual Function Implementation in C++ Programming

Question:

Write a base class called Employee. Use this class to store values name, salary etc.
Derive three specific classes called Manager, Teamleadand Programmer. Add to the
base class, a member function get_data() to initialize base class data members and
another function display() to compute and display information . Make display() as a
virtual function and redefine this function in the derived classes to suit their
requirements.

Solutions

#include<iostream>
#include<string>
using namespace std;

class Employee
{
private:
string name;
float sal;
public:
Employee()
{
name='NULL';
sal=0;
}
void get_data()
{
cout<<"\nPlease Enter Employee Name:"<<endl;
cin>>name;
cout<<"Please Salary of "<<name<<":"<<endl;
cin>>sal;
}
float get_sal()
{
return sal;
}
string get_name()
{
return name;
}
virtual void display()
{
}
};

class Manager:public Employee
{
public:
void display()
{
cout<<"\n****Manager Details****"<<endl;
cout<<"Manager Name:"<<get_name()<<endl;
cout<<"Manager Salary:"<<get_sal()<<endl;
}
};

class Teamleader:public Employee
{
public:

void display()
{
cout<<"\n****Teamleader Details****"<<endl;
cout<<"Teamleader Name:"<<get_name()<<endl;
cout<<"Teamleader Salary:"<<get_sal()<<endl;
}
};

class Programmer:public Employee
{
public:

void display()
{
cout<<"\n****Programmer Details****"<<endl;
cout<<"Programmer Name:"<<get_name()<<endl;
cout<<"Programmer Salary:"<<get_sal()<<endl<<endl;
}
};

int main()
{
Manager m;
m.get_data();
m.display();
Teamleader t;
t.get_data();
t.display();
Programmer p;
p.get_data();
p.display();
return 0;
}