Write a program that implements the concept of inheritance. For example: in the

Question

Write a program that implements the concept of inheritance. For example: in the following scenario. Air university is inherited by both student and instructor class In main () you will enter the information from each person who want to get admission/join Air University. If he is a student then will save all his information (e.g. gpa, enroll course, any paid fees) and so for instructor. Second step is to display all the information accordingly if user chooses a choice to show all students/teacher information.

Explanation / Answer

#include <iostream>
using namespace std;

class AirUniversity //base class
{
   private:
   int ID;
   public:
   void id(int ID)
   {
       this->ID = ID;
   }
   int getid()
   {
       return ID;
   }
  
};
class Student:public AirUniversity //student class derived from AirUniversity class
{
   private:
   float GPA,amount;
   string course;
  
   public:
   void gpa(float GPA)
   {
       this->GPA = GPA;
   }
   void enroll(string course)
   {
       this->course = course;
   }
   void pay(float amount)
   {
       this->amount = amount;
   }
   void display()
   {
       cout<<" Student Information";
       cout<<" Id : "<<getid()<<" GPA :"<<GPA<<" Course name : "<<course<<" Fees : "<<amount;
   }
  
};
class Instructor:public AirUniversity //Instructor class derived from AirUniversity class
{
   private:
   string Grade,course;
   float pay;
  
   public:
   void grade(string Grade)
   {
       this->Grade = Grade;
   }
   void teach(string course)
   {
       this->course = course;
   }
   void getPaid(float pay)
   {
       this->pay = pay;
   }
   void display()
   {
       cout<<" Instructor Information";
       cout<<" ID : "<<getid()<<" Grade :"<<Grade<<" Course to teach : "<<course<<" Salary : "<<pay;
   }
  
};

int main()
{
   Student s; //student class object
   Instructor i; //Instructor class object
   float GPA,amount,pay;
   string course,Grade;
   int ID,option;
  
   cout<<" Enter student information";
   cout<<" Enter student id";
   cin>>ID;
   s.id(ID);
   cout<<" Enter GPA";
       cin>>GPA;
       s.gpa(GPA);
       cout<<" Enter course name to enroll";
       cin>>course;
       s.enroll(course);
       cout<<" Enter amount to pay";
       cin>>amount;
       s.pay(amount);
      
  
   cout<<" Enter Instructor information";
   cout<<" Enter Instructor id";
   cin>>ID;
   i.id(ID);
   cout<<" Enter grade of instructor";
   cin>>Grade;
   i.grade(Grade);
   cout<<" Enter course to teach";
   cin>>course;
   i.teach(course);
   cout<<" Enter pay for instructor";
   cin>>pay;
   i.getPaid(pay);
  
   cout<<" Do you want to display information about student or instructor <1-Student,2-Instructor>";
   cin>>option;
  
   if(option==1)
   s.display();
   else if(option ==2)
   i.display();
   else
   cout<<" Invalid option";
  
   return 0;
}

output:

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