Question

This is my assignment with using C++ programming.

Im not good at C++ programming so can you write a Remark of each Code?

Thank you.

-Suppose a car has an identifier (carid) and consists of an engine(Engine) and a body (Body).

-Engine is an integer type and has engine number (engineNo) and string type engine name (engineName).

-Body is an integer type and has a body number (bodyNo) and a string type body name (bodyName).

-Write a program that creates a Car object and copies that object.

(In both cases below, print the original and a copy to check the results.)

—Shallow copy

—Deep copy

Answer 1

SHALLOW COPY: Changes made in the copy of a class object gets reflected onto the original object.

#include<iostream>

#include<cstring>

using namespace std;

public class Car
{

     public:
   string carid;
   int Engine_no;
   string Enginename;
   string Bodyname;
   int Body_no;
   ~Car()
   {
       delete carid;
       delete Engine_no;
       delete Enginename;
       delete Bodyname;
       delete Body_no;
   }

   Car(string s, int en, string ename, string bname, int bn)
   {
       carid=s;
       Engine_no=en;
       strcpy( Enginename, ename);
        strcpy(Bodyname, bname);
       Body_no=bn;
   }
};

int main()
{
   string a;int b;string c;string d;int e;

   cout<<"Enter the Car Id no.";
   cin>>a;
   cout<<"Enter the Engine Name";
   cin>>c;
   cout<<"Enter the Engine no.";
   cin>>b;
   cout<<"Enter the Body name";
   cin>>d;
   cout<<"Enter the Body_no";
   cin>>e;

   Car obj(a,b,c,d,e);//Normal Constructor call
   Car obj2=obj;

   printf("%s, %d, %s, %s, %d", obj.carid,obj.Engine_no,obj.Enginename,obj.Bodyname,obj.Body_no);
  
   printf("%s, %d, %s, %s, %d", obj2.carid,obj2.Engine_no,obj2.Enginename,obj2.Bodyname,obj2.Body_no);

return 0;

}
   

DEEP COPY: Changes made in the copy of a class object doe not get reflected onto the original object because of two seperate dynamically allocated memory locations.

#include<iostream>
#include<cstring>

using namespace std;

public class Car
{

     public:
    string carid;
    int Engine_no;
    string Enginename;
    string Bodyname;
    int Body_no;

    ~Car()
    {
        delete carid;
        delete Engine_no;
        delete Enginename;
        delete Bodyname;
        delete Body_no;
    }

    Car(string s, int en, string ename, string bname, int bn)
    {
        carid=s;
        Engine_no=en;
        strcpy(Enginename, ename);
        strcpy(Bodyname, bname);
        Body_no=bn;
    }

      Car(Car &s, Car &en, Car &ename, Car &bname, Car &bn)//assignment of values to seperate ememory location as reqired by a deep copy
    {
        carid=s;
        Engine_no=en;
        strcpy(Enginename, ename);
        strcpy(Bodyname, bname);
        Body_no=bn;
    }
};

int main()
{
    string a;int b;string c;string d;int e;

    cout<<"Enter the Car Id no.";
    cin>>a;
    cout<<"Enter the Engine Name";
    cin>>c;
    cout<<"Enter the Engine no.";
    cin>>b;
    cout<<"Enter the Body name";
    cin>>d;
    cout<<"Enter the Body_no";
    cin>>e;

    Car obj(a,b,c,d,e);//Normal Constructor call
    Car obj2=obj;

    printf("%s, %d, %s, %s, %d", obj.carid,obj.Engine_no,obj.Enginename,obj.Bodyname,obj.Body_no);
  
    printf("%s, %d, %s, %s, %d", obj2.carid,obj2.Engine_no,obj2.Enginename,obj2.Bodyname,obj2.Body_no);

return 0;

}