STATIC DATA MEMBER FUNCATION

 #include <iostream>

using namespace std;

class Student

{

public:

 int roll;

 string name;

 static int addNo;

 Student(string n)

 {

 addNo++;

 roll=addNo;

 name=n;

 }

 void display()

 {

 cout<<"Name "<<name<<endl<<"Roll "<<roll<<endl;

 }

};

int Student::addNo=0;

int main()

{

 Student s1("John");

 Student s2("Ravi");

 Student s3("Khan");

 Student s4("Khan");

 Student s5("Khan");

 Student s6("Khan");

 s1.display();

 s2.display();

 s3.display();

 s4.display();

 s5.display();

 s6.display();

 cout<<"Number Admission "<<Student::addNo<<endl;

}