#include <iostream>
#include <math.h>

using namespace std;

class Worker
{
  private:
    double income;

  public:
    string name,surname;
    unsigned age;
    float wage,bonus;
    double tax;
    Worker();
    void calculate_income();
    void show_invoice();
};

Worker::Worker()
{
}
 
void Worker::calculate_income()
{
  tax=0.15;//15%
  income=((wage+bonus)*(1-tax));
}

void Worker::show_invoice()
{
  cout<<"\nWorker "<<name<<" "<<surname<<" , aged "<<age;
  cout<<"\nMonthly wage "<<wage<<", monthly bonus "<<bonus<<"\nSalary this month: "<<income<<"\n\n";
}

int main()
{
  Worker Fred;//Here we create an "Object"
  Fred.name="Fred";
  Fred.surname="Smith";
  Fred.age=41;
  Fred.wage=1400;
  Fred.bonus=200;
  Fred.calculate_income();
  Fred.show_invoice();

  Worker Allan;
  Allan.name="Allan";
  Allan.surname="Smith";
  Allan.age=21;
  Allan.wage=950;
  Allan.bonus=0;
  Allan.calculate_income();
  Allan.show_invoice();

  return 0;
}