Encapsulation in C++

Encapsulation:

• Data encapsulation is used to hide the implementation details from users.
• If a data member is private it means it can only be accessed within the same class. 
• No outside class can access private data member (variable) of other class.

Syntax:

1. class class_name

   {

   private data_members;

   public: methods()

   {

   }

   };

Example program:

1. #include<iostream.h>

   #include<conio.h>

   class Account {

       private:

        int account_number;

        int account_balance;

       public:

        void show_Data() {

             account_number=13456;

             account_balance=5000;

             cout<<"\nBefore deposit of account XXXXX"<<account_number<<" number of balance :"<<account_balance;

       }

        void deposit(int a) {

             if (a < 0) {

                 cout<<"\nGiven amount is wrong...";

             }

             else{

                    account_balance = account_balance + a;

                    cout<<"\n\nAfter deposit of current balance :"<<account_balance;

             }

       }

   };

   void main()

       {

             clrscr();

             Account ac;

             ac.show_Data();

             ac.deposit(200);

             getch();

       }

Output:

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