Question

c++

using polymorphyism , create an inheritance hierarchy for the following types of insurance :

Home, vehicle , life

2 member functions should be included:

- calcpremium

   - Home- 0.5% of the value of the home

   - Life- 1% of the value of the policy

   - Vehicle - 0.5% of the value of the policy

calcCommission

Home- 0.2% of the value of the home

Life- 1% of the value of the policy

Vehicle - 0.5% of the value of the policy

in main

   1. instantiate an object for each type of insurance policy.

       - Home: value is $457,999.00

       - Life: policy value $1,000,000.00

       - Vehicle: policy value is $25,000.00

   2. Call a global function ( exercising polymorphism) to print out the premium

   and commission for each policy.

   3. make sure that objects of the base class cannot be instantiated.

Answer 1

#include <iostream>
using namespace std;

//base class to hold insurance details
class Insurance
{
public:

//declare variables
int value;

//functions expected to be overridden by child classed
virtual double calcpremium()=0;
virtual double calcCommission()=0;

//global function to display insurance details
void display()
{
     cout<<"\nValue: \t\t"<<value;
     cout<<"\nPremium: \t"<<calcpremium();
     cout<<"\nCommission: \t"<<calcCommission();
}
};

//home insurance class
class Home:public Insurance
{
    public:
    Home(int v)
    {
        value=v;
    }
    double calcpremium()
    {
        return value* 0.5/100;
    }
    double calcCommission()
    {
        return value*0.2/100;
    }
};

//vehicle class
class Vehicle:public Insurance
{
    public:
    Vehicle(int v)
    {
        value=v;
    }
    double calcpremium()
    {
        return value* 0.5/100;
    }
    double calcCommission()
    {
        return value*0.5/100;
    }
};

//life insurance class

class Life:public Insurance
{
    public:
    Life(int v)
    {
        value=v;
    }
    double calcpremium()
    {
        return value* 0.1/100;
    }
    double calcCommission()
    {
        return value*0.1/100;
    }
};

//main function which triggers the class
int main()
{
    //delcare insurance object
   Insurance *i;

   //declare objects of three classes
   Home home(457999);
   Vehicle vehicle(25000);
   Life life(1000000);

   //assign home object to base class object
   cout<<"\n***Home Insurance****";
   i=&home;
   i->display();

   //assign life object to base class object
   cout<<"\n***Life Insurance****";
   i=&life;
   i->display();

   //assign vehicle object to base class object
   cout<<"\n***Vehicle Insurance****";
   i=&vehicle;
   i->display();
   return 0;
}

Sample Output:

***Home Insurance****                                                                                                                                           

Value:          457999                                                                                                                                          

Premium:        2289.99                                                                                                                                         

Commission:     915.998                                                                                                                                         

***Life Insurance****                                                                                                                                           

Value:          1000000                                                                                                                                         

Premium:        1000                                                                                                                                            

Commission:     1000                                                                                                                                            

***Vehicle Insurance****                                                                                                                                        

Value:          25000                                                                                                                                           

Premium:        125                                                                                                                                             

Commission:     125