9 Static data member and member function

#include <iostream>
using namespace std;
class BCA{
    int x;
    static int count;
    public:
    // defualt constructor
    BCA(){
        count++;
    }
    static int getcount(){
        return count;
    }
};
int BCA::count=0;
int main()
{
    cout<<"Intial value of count. "<<BCA::getcount()<<endl;
    BCA a;
    cout<<"count after 1st obj. "<<BCA::getcount()<<endl;
    BCA b;
    cout<<"count after 2nd obj. "<<BCA::getcount()<<endl;
    BCA c;
    cout<<"count after 3rd obj. "<<BCA::getcount()<<endl;
    return 0;
}
/*
Output
Intial value of count. 0
count after 1st obj. 1
count after 2nd obj. 2
count after 3rd obj. 3
*/