C++ part-1(static variable and static function)

So this is something new that is language and purely that is c++ so we are going to study about some theory and program mix .So this is starting there are many parts of this so today study about static variable and static function and a program of it which you can run on turboc++ for others code might be change for some few things so that you can replace so now we start

Static variable

-> These are the variables which keep modify their values in different function call.

-> They are allocated storage only once a time in a program. 

-> When we declare a member of a class as static it means no matter how many objects of the class are created, there is only one copy of the static member.

Static function

-> These are the function which are associated with class not with instance of class .

-> To call static function no need to create objects.

-> There only allowed to be access by static variable.

-> There is a use of scope resolution operator.

CODE

#include<iostream.h>                                                                                                                                #include<conio.h>                                                                                                                                    class abc          

{

                      static int i;

                      static int cout;

                      public:(so it can be access by out of class also)

                                                  static void input( )

                                                  {

                                                                cout<<"enter any number:";

                                                                cin>>i;

                                                                count++;

                                                  }

                                                   static void display( )

                                                  {

                                                                      cout<<"i="<<i<<endl;

                                                                      cout<<"cout="<<cout<<endl;

                                                  }

};

int abc :: i;

int abc :: count;

void main( )

{                 abc :: input( );

                   abc :: display( );

                   abc :: input( );

                   abc :: display( );

(it is repeated because we want to test that the value of count is increasing or not)

                   getch( );

}

code finished               

NOTE : the text in the ( )these two are not a part of code it is just for your explanation

If you have any problem with this article then write in comment box .

PART 2 OF C + +

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