---
jupytext:
  formats: md:myst
  text_representation:
    extension: .md
    format_name: myst
kernelspec:
  display_name: Python 3
  language: python
  name: python3
---

#include <iostream>

using namespace std;

// Calculate salary using static members
class salary {
public:
    void init(int b) {
        b_sal = b;
        your_bonus = 0;
    }

    void calc_bonus(double perc) {
        your_bonus = b_sal * perc;
    }

    static void reset_all(int p) {
        all_bonus = p;
    }

    int comp_tot() const {
        return (b_sal + your_bonus + all_bonus);
    }

private:
    int         b_sal;
    int         your_bonus;
    static int  all_bonus;      // declaration
};

// declaration and definition
int salary::all_bonus = 100;

int main() {
    salary w1, w2;

    w1.init(1000);
    w2.init(2000);

    w1.calc_bonus(0.2);
    w2.calc_bonus(0.15);

    salary::reset_all(400);

    cout    << " w1 "
            << w1.comp_tot() 
            << " w2 " 
            << w2.comp_tot() 
            << endl;
}