Static Keyword - Static Variables in OOPs

 #include <iostream>

using namespace std;

void counter() {

    static int count = 0; // Static Variable

    count++;

    cout << "count : " << count << endl;

};

int main() {

    counter();

    counter();

    counter();

    return 0;

}

output:

count : 1

count : 2

count : 3