Personal information system using constructor, destructor, static member functions, friend class, this pointer, inline code and dynamic memory allocation.

Experiment:

Develop a program in C++ to create a database of student’s information system containing the following information: Name, Roll number, Class, Division, Date of Birth, Blood group, Contact address, Telephone number, Driving license no. and other. Construct the database with suitable member functions. Make use of constructor, default constructor, copy constructor, destructor, static member functions, friend class, this pointer, inline code and dynamic memory allocation operators-new and delete as well as exception handling.

Problem Statement:

            Develop an object-oriented programming in C++ to create a database of the Personal information System Containing the following information:

            Name, Date of Birth, Blood Group, Height, Weight, Insurance policy Number, Contact address, Telephone number, driving license no. etc.

            Construct the Database with suitable member functions for initializing and destroying the data via constructer, default constructer, copy constructer, destructor, static member function, friend class, this pointer, inline code, and dynamic memory allocation operators- new and delete as well as exception handling.

Objectives:

            To learn the concept of Constructor, default Constructor, copy constructor, destructor, static member functions, friend class, this pointer, inline code, and dynamic memory allocation operators- new and delete.   

Algorithm:

1.     Start

2.     Read Personal information such as Name, Date of Birth, Blood group, Height, Weight, Insurance policy, Contact address, Telephone number driving license no.

3.     Print all information from database

4.     Stop

Program:

#include<iostream>

#include<string.h>

using namespace std;

class Data

{

string address;

long int *mobile_no;

long int *dl_no;

public:

Data(); // default constructor of class Data

~Data(); // Destructor of class Data

void input_student_data();

void display_student_data();

friend class Student;

};

class Student

{

string Name;

int Roll;

string Class;

char *Div;

string dob;

char *bg;

static int count;

public:

Student();

~Student();

static int get_count()

{

return count;

}

void input_data(Data *);

void display_data(Data *);

};

Data::Data()

{

address = " ";

mobile_no = new long;

dl_no = new long;

}

Data::~Data()

{

delete mobile_no;

delete dl_no;

}

void Data::input_student_data()

{

cout<<"Contact Address : ";

cin.ignore();

getline(cin,address);

cout<<"Mobile Number : ";

cin>>*mobile_no;

cout<<"Driving License Number : ";

cin>>*dl_no;

}

void Data::display_student_data()

{

cout<<"Contact Address : "<<address<<endl;

cout<<"Mobile Number : "<<*mobile_no<<endl;

cout<<"Driving License Number : "<<*dl_no<<endl;

}

Student::Student()

{

Name = " ";

Roll = 0;

Class = " ";

Div = new char;

dob = "dd/mm/yyyy";

bg = new char[5];

}

Student::~Student()

{

delete Div;

delete[] bg;

}

inline void Student::input_data(Data *stud1)

{

cout<<"Name : ";

cin.ignore();

getline(cin,Name);

cout<<"Roll Number : ";

cin>>Roll;

cout<<"Class : ";

cin.ignore();

getline(cin,Class);

cout<<"Division : ";

cin>>Div;

cout<<"Date of Birth : ";

cin.ignore();

getline(cin,dob);

cout<<"Blood Group : ";

cin>>bg;

stud1->input_student_data();

count++;

}

inline void Student::display_data(Data *stud2)

{

cout<<"Name : "<<Name<<endl;

cout<<"Roll Number : "<<Roll<<endl;

cout<<"Class : "<<Class<<endl;

cout<<"Division : "<<Div<<endl;

cout<<"Date of Birth : "<<dob<<endl;

cout<<"Blood Group : "<<bg<<endl;

stud2->display_student_data();

cout<<"----------------------------------------------------------------------\n";

}

int Student::count;

int main()

{

Student *st1[100];

Data *st2[100];

int a;

int s=0;

char ch;

for(int i=0;i<2;i++)

{

cout<<"--------------------MENU--------------------\n";

cout<<"1. New Student\n";

cout<<"2. View Database\n";

cout<<"Enter your choice : "<<endl;

cin>>a;

switch (a)

{

case 1 :

{

do

{

st1[s] = new Student;

st2[s] = new Data;

cout<<"Enter the details of student "<<s+1<<" : "<<endl;

st1[s]->input_data(st2[s]);

s++;

cout<<"Do you want to create a new student (y/n): ";

cin>>ch;

}while(ch=='y' || ch=='y');

}

break;

case 2:

{

cout<<"**************************StudentDatabase****************************"<<endl;

for(int j=0;j<s;j++)

{

st1[j]->display_data(st2[j]);

}

}

break;

default:

cout<<"WRONG CHOICE EXECUTE AGAIN\n";

}

}

cout<<"Total Number of Students : "<<Student::get_count()<<endl;

return 0;

}         

Output:

--------------------MENU--------------------

1. New Student

2. View Database

Enter your choice :

1

Enter the details of student 1 :

Name : kdjkfjkj

Roll Number : 12

Class : 6

Division : A

Date of Birth : 24/6/2000

Blood Group : A+

Contact Address : jhkjyug

Telephone Number : 892563215

Driving License Number : 52258656

Do you want to create a new student (y/n): y

Enter the details of student 2 :

Name : hdjhdjh

Roll Number : 21

Class : A

Division : B

Date of Birth : 27/8/2003

Blood Group : A+

Contact Address : 656853235

Telephone Number : 256656555

Driving License Number : 243546

Do you want to create a new student (y/n): n

--------------------MENU--------------------

1. New Student

2. View Database

Enter your choice :

2

**************************StudentDatabase****************************

Name : kdjkfjkj

Roll Number : 12

Class : 6

Division : A

Date of Birth : 24/6/2000

Blood Group : A+

Contact Address : jhkjyug

Telephone Number : 892563215

Driving License Number : 52258656

----------------------------------------------------------------------

Name : hdjhdjh

Roll Number : 21

Class : A

Division : B

Date of Birth : 27/8/2003

Blood Group : A+

Contact Address : 656853235

Telephone Number : 256656555

Driving License Number : 243546

----------------------------------------------------------------------

Total Number of Students : 2

 

--------------------------------

Process exited after 374.7 seconds with return value 0

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