CPP - Class and Object

 

CPP

Class &  Object

Fill in the blanks

1.Class is Collection of object.

2.Object is Collection of data.

3.Access Specifiers are Public,Private & Protected.

4.How to access private variable In Public ->function to access

5.Write a syntax for Object  Classname Objvariablename;

6.Write a Symbol for member function Outside of the class   ::  

 

        Answer the following Question

                                                                       (4 marks)

1.Write a Program for Accessing Private data using Class & Object

#include<iostream.h>

#include<conio.h>

class train{

private:

    char train_no[10];

    char train_name[15];

    float train_fare;

public:

    void gettraindetails()

    {

         cout<<"enter train no , name , train fare";

         cin>>train_no>>train_name>>train_fare;

    }

    void printtraindetails()

    {

         cout<<"The Entered Train Details are\n";

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

         cout<<"Train Number:"<<train_no<<endl;

         cout<<"Train Name:"<<train_name<<endl;

         cout<<"Train fare:"<<train_fare<<endl;

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

    }

};

 

void main()

{

train T;

clrscr();

T.gettraindetails();

T.printtraindetails();

getch();

}

2.Write a Program for Member function outside of the Class

#include<iostream.h>

#include<conio.h>

class number{

private:

   int n;

public:

   void getnumber();

   void printnumber()

   {

      cout<<"N="<<n<<"\n";

   }

};

   void number::getnumber()

   {

      cout<<"Get N";

      cin>>n;

   }

void main()

{

number T;

clrscr();

T.getnumber();

T.printnumber();

getch();

}

 

3.Write a Program for Nesting Member Function

#include<iostream.h>

#include<conio.h>

class set{

private:

   int m,n;

public:

   void display();

   void getdata()

   {

      cout<<"Get M and N="<<endl;

      cin>>m>>n;

   }

   int largest();

};

   int set::largest()

   {

      if(m>n)

      {

         return m;

      }

      else

      {

         return n;

      }

   }

   void set::display()

   {

      cout<<"Given no are"<<m<<endl<<n<<endl;

      cout<<"Largest is="<<largest();

      }

void main()

{

set T;

clrscr();

T.getdata();

T.largest();

T.display();

getch();

}

 

4.Write a Program for Array using Class

#include<iostream.h>

#include<conio.h>

class array{

private:

   int a[10];

public:

   void getarray();

   void putarray();

};

void array::getarray()

{

   cout<<"enter 5 array";

   for(int i=0;i<5;i++)

      cin>>a[i];

}

void array::putarray()

{

      for(int i=0;i<5;i++)

      cout<<a[i]<<endl;

}

 

void main()

{

array A;

clrscr();

A.getarray();

A.putarray();

getch();

}

 

5.Write a Program for Static Data Member

#include<iostream.h>

#include<conio.h>

class item

{

int n;

   static int count;

public:

   void getdata()

   {

       cout<<"get N";

       cin>>n;

       count++;

   }

   void getcount()

   {

       cout<<"Count="<<count<<"\n";

   }

};

int item::count;

 

void main()

{

   item a,b,c;

   clrscr();

   a.getcount();

   b.getcount();

   c.getcount();

   a.getdata();

   b.getdata();

   c.getdata();

   cout<<"After reading data: ";

   a.getcount();

   getch();

}

 

6.Write a Program for Array of object using Class

#include<iostream.h>

#include<conio.h>

class employee{

private:

   int eno,sal;

public:

   void getdetail()

   {

   cout<<"enter employee eno and salary";

       cin>>eno>>sal;

   }

   void printdetails()

   {

       cout<<eno<<"\t"<<sal<<endl;

   }

};

 

void main()

{

employee e[5];

clrscr();

for(int i=0;i<5;i++)

{

   e[i].getdetail();

}

for(i=0;i<5;i++)

{

   e[i].printdetails();

}

getch();

}