Develop an object oriented program in C++ to create a database of student information system containing the following information: Name, Roll number, Class, division, Date of Birth, Blood group, Contact address, telephone number, driving license no. etc Construct the database with suitable member functions for initializing and destroying the data viz constructor, default constructor, Copy constructor, destructor, static member functions, friend class, this pointer, inline code and dynamic memory allocation operators-new and delete.

Class:-SE Computer  OOP & CG Practical


Title : - Develop an object oriented program in C++ to create a database of student information system containing the following information: Name, Roll number, Class, division, Date of Birth, Blood group, Contact address, telephone number, driving license no. etc Construct the database with suitable member functions for initializing and destroying the data viz constructor, default constructor, Copy constructor, destructor, static member functions, friend class, this pointer, inline code and dynamic memory allocation operators-new and delete.


Solution :-


#include<iostream>
#include<string.h>
using namespace std;
class person_additional_info
{
char address[20],license[20],insurance[20];
long int contact;

public:
person_additional_info() //Default constructor
{
strcpy(address,"XYZ");
 strcpy(license,"XY-0000000000");
strcpy(insurance,"XY00000000X");
contact=000000000;

}

 ~person_additional_info() //Destructor
 {
 cout<<"I am in Destructor";
 }

 friend class person; // Declaration Friend class
};
//Definition of friend class
class person
{
char name[20], dob[10], blood[10];
float ht,wt;
static int count; // Static variable
person_additional_info *pai;
public:
person() //Default constructor
{ strcpy(name,"XYZ");
 strcpy(dob,"dd/mm/yy");
 strcpy(blood,"A +");
 ht=0;
 wt=0;
pai=new person_additional_info;
 }
person(person*p1) //Copy constructor
{ strcpy(name,p1->name);
 strcpy(dob,p1->dob);
 strcpy(blood,p1->blood);
 ht=p1->ht;
 wt=p1->wt;
pai=new person_additional_info;
strcpy(pai->address,p1->pai->address);
 strcpy(pai->license,p1->pai->license);
 strcpy(pai->insurance,p1->pai->insurance);
pai->contact=p1->pai->contact;
 }
static void showcount() //Static member function
{
cout<<"\nNo of records count="<<count<<"\n";
 }
 ~person() //Destructor
 {
 cout<<"\nI am in Destructor\n";
 }
void getdata(char name[20]);
inline void display(); // Inline function declaration
};
void person::getdata(char name[20])
{
strcpy(this->name,name); //this pointer
cout<<"\n Enter date of birth";
 cin>>dob;
cout<<"\n Enter blood group";
 cin>>blood;
cout<<"\n Enter height";
 cin>>ht;
cout<<"\n Enter weight";
 cin>>wt;
cout<<"\n Enter address";
cin>>pai->address;
cout<<"\n Enter Licence number";
 cin>>pai->license;
cout<<"\n Enter Insurance policy number";
 cin>>pai->insurance;
cout<<"\n Enter Contact number";
cin>>pai->contact;
count++;
}
//inline function definition
void person::display()
{
cout<<"\t"<<name;
cout<<"\t"<<dob;
cout<<"\t"<<blood;
cout<<"\t"<<ht;
cout<<"\t"<<wt;
cout<<"\t"<<pai->address;
cout<<"\t"<<pai->license;
cout<<"\t"<<pai->insurance;
cout<<"\t"<<pai->contact;
}
int person::count; //Static variable definition
int main()
{
person *p1,*p2;
int ch;
p1=new person; //call default constructor & dynamic memory allocation
p2=new person(p1); //call copy constructor
cout<<"\tName";
cout<<"\tDob";
cout<<"\t Blood";
cout<<"\tHt";
cout<<"\tWt";
cout<<"\tAddress";
cout<<"\tLicense";
cout<<"\tInsurance";
cout<<"\tContact";
cout<<endl;
cout<<"Default Constructor Value \n";
p1->display();
cout<<"\n";
cout<<"Copy Constructor Value \n";
p2->display();
 int n;
cout<<"\nEnter how many records you want??";
cin>>n;
person p3[n]; //array of object
char name[20];
int x=0;
 do
{
 cout<<"\nWelcome to Personal database system";
cout<<"\n1.Enter the record";
cout<<"\n2.Display the record";
cout<<"\n3.Exit";
cin>>ch;
switch(ch)
{
case 1:
{
cout<<"\nEnter the Name ";
cin>>name;
p3[x].getdata(name);
person::showcount(); // calls static function
x++;
break;
}
case 2:
{
cout<<"\tName";
cout<<"\tDob";
cout<<"\t Blood";
cout<<"\tHt";
cout<<"\tWt";
cout<<"\tAddress";
cout<<"\tLicense";
cout<<"\tInsurance";
cout<<"\tContact";
for(int i=0;i<n;i++)
{
cout<<"\n";
p3[i].display(); //calls inline function
}
break;
}
}
}while(ch!=3);
delete p1; //dynamic memory de-allocation
delete p2;
return 0;
}

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