Class:
 
     Class is a user define data type.

     A class must be declare by a keyword 'class'.

     Basically a class contain member function and member variable.

     A class may be empty.

     In C++ class end with a semicolon..

    

for e.g

class sap

{

  int i , j;   //member variable and also global variable

  public:

             void add()   // member function

               {

                i=12;

                j=34;

                cout<<"The sum is="<<(i+j);

               }

} ;        // end class sap

void main()

{

sap s;

s.add();

}

OUTPUT:

The sum is=46