/*
Problem statement:
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.
*/
#include<iostream> //header file used for cin and cout
#include<string.h> //header file for string class
using namespace std; //refer cin and cout
#define max 100;
class per_info //stud_info is friend class of per_info
{
string lic, dob, bldgrp; //personal info variables
public:
per_info(); //DECLARE DEFAULT CONSTRUCTOR//
per_info(per_info &); //DECLARE COPY CONSTRUCTOR//
~per_info() //DEFINITION AND DECLARATION OF DESTRUCTOR
{
cout<<"\nDESTRUCTOR IS CALLED!!!!!"<<endl<<"RECORD DELETED SUCCESSFULLY"<<endl;
}
friend class student; //FRIEND FUNCTION DECLARATION
};
class student //DEFINITION OF STUDENT CLASS
{
string name, address, year; //OBJECTS OF STRING CLASS
char insurance_policy;
float height,weight;
long mob;
static int cnt; // STATIC VARIABLE DECLARATION
public:
void create(per_info &); //TO CREATE DATABASE AND PASSED REFERENCE OF PERSONAL INFO OBJECT
void display(per_info &); //TO DISPLAY DATABASE
inline static void inccnt() //STATIC FUNCTION//
{
cnt++;
}
inline static void showcnt() //STATIC FUNCTION//
//INLINE FUNCTION//
{
cout<<"\nTOTAL NO OF RECORDS ARE : "<<cnt;
}
student(); //DEFAULT CONSTRUCTOR//
student(student &); //COPY CONSTRUCTOR OF STUDENT CLASS//
~student() //DESTRUCTOR OF STUDENT CLASS//
{
cout<<"\nDESTRUCTOR IS CALLED!!!"<<endl<<"RECORD DELETED SUCCESSFULLY"<<endl;
}
};
int student::cnt; //DEFINITION OF STATIC MEMBER//
student::student() //CONSTRUCTOR DEFINITION//
{
name="ANAGHA NIRGUDE";
address="SR NO.81 BABBAR SOLANKI \nDIGHI, PUNE";
year="SE COMPUTER";
insurance_policy='y';
height=3.2;
weight=60.5;
mob=942329999;
}
per_info::per_info() //CONSTRUCTOR DEFINITION//
{
lic="ABD45656";
dob="02/11/1997";
bldgrp="A-";
}
student::student(student &obj) //DEFINITION OF COPY CONTRUCTOR OF STUDENT CLASS
{
this->name=obj.name; //this is a pointer points to the object which invokes it
this->address=obj.address; //this-> can be written as name
this->year=obj.year;
this->insurance_policy=obj.insurance_policy;
this->height=obj.height;
this->weight=obj.weight;
this->mob=obj.mob;
}
per_info::per_info(per_info &obj) //DEFINITION OF COPY CONTRUCTOR OF PERSONAL CLASS
{
lic=obj.lic;
dob=obj.dob;
bldgrp=obj.bldgrp;
}
//TO CREATE THE DATABASE
//DEFINTION OF CREATE FUNTION
void student::create(per_info &obj)
{
cout<<"\nNAME : "<<endl;
cin>>name;
cout<<"\nADDRESS : "<<endl;
cin>>address;
cout<<"\nDATE OF BIRTH : "<<endl;
cin>>obj.dob;
cout<<"\nYEAR : "<<endl;
cin>>year;
cout<<"\ninsurance_policy: "<<endl;
cin>>insurance_policy;
cout<<"\nheight : "<<endl;
cin>>height;
cout<<"\nweight : "<<endl;
cin>>weight;
cout<<"\nBLOOD GROUP : "<<endl;
cin>>obj.bldgrp;
cout<<"\nLICEINCE NUMBER : "<<endl;
cin>>obj.lic;
cout<<"\nPHONE NUMBER : "<<endl;
cin>>mob;
}
//DEFINTION OF DISPLAY FUNCTION
//TO DISPLAY DATABASE
void student::display(per_info &obj)
{
cout<<"\n***********************"<<endl;
cout<<"\nNAME OF STUDENT : "<<name<<endl;
cout<<"\nADDRESS OF STUDENT : "<<address<<endl;
cout<<"\nDATE OF BIRTH : "<<obj.dob<<endl;
cout<<"\nYEAR : "<<year<<endl;
cout<<"\ninsurance_policy : "<<insurance_policy<<endl;
cout<<"\nheight : "<<height<<endl;
cout<<"\nweight : "<<weight<<endl;
cout<<"\nBLOOD GROUP : "<<obj.bldgrp<<endl;
cout<<"\nLICEINCE NUMBER : "<<obj.lic<<endl;
cout<<"\nPHONE NUMBER : "<<mob<<endl;
cout<<"\n***********************"<<endl;
}
int main()
{
int n; //COUNT OF NUMBER OF STUDENTS
int ch;
char ans;
cout<<"\nENTER NO OF STUDENTS :"<<endl;
cin>>n;
cout<<"\n***********************"<<endl;
student *sobj=new student[n]; //NEW IS DYNAMIC MEMORY ALLOCATION OPERATOR, sobj IS POINTER OF TYPE STUDENT AND IT IS A ARRAY OF OBJECT OF SIZE n
per_info *pobj=new per_info[n]; //NEW IS DYNAMIC MEMORY ALLOCATION OPERATOR, pobj IS POINTER OF TYPE STUDENT AND IT IS A ARRAY OF OBJECT OF SIZE n
do
{
cout<<"\n Menu \n 1. Create Database \n 2. Display Databse \n 3. Copy Constructor\n 4. Default Constructor \n 5. Delete (Destructor)";
cout<<"\n Enter your Choice: ";
cin>>ch;
switch(ch)
{
case 1: // create database
{
for(int i=0;i<n;i++)
{ sobj[i].create(pobj[i]);
sobj[i].inccnt();}
}
break;
case 2: // Display Database
{
sobj[0].showcnt(); //to display the total count of students
//we can use any object of student class as it is static member function
for(int i=0;i<n;i++)
{
sobj[i].display(pobj[i]);
}
}
break;
case 3: // Copy Constructor
{
student obj1;
per_info obj2;
obj1.create(obj2);
student obj3(obj1); //invoking copy constructor of student info to copy contents from object 1 to 3
per_info obj4(obj2); //invoking copy constructor of personal info to copy contents from object 2 to 4
cout<<"\n Copy Constructor is called ";
obj3.display(obj4);
}
break;
case 4: // Default Constructor
{
student obj1; //obj1 is invoking default constructor of class student
per_info obj2; //obj2 is invoking default constructor of class personal
cout<<"\n Default Constructor is called ";
obj1.display(obj2);
}
break;
case 5: // destructor is called
delete [] sobj; //invoking destructor and delete sobj dynamically
delete [] pobj; //invoking destructor and delete pobj dynamically
} //end of switch case
cout<<"\n Want to continue:(y/n)" ;
cin>>ans;
}while(ans=='y') ;
return 0;
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