class Khalid {

  private String name;
  private int age;
  private double salary;
  private double bonus;





public Khalid  (String name, int age, double salary, double bonus) {
  this.name=name;
  this.age=age;
  this.salary=salary;
  this.bonus=bonus;


}

public double setBonus (double age, double bonus){

  this.bonus=age*bonus;
}




}


Khalid kald =new Khalid("kald",18, 100,0);
Khalid Lod=new Khalid("Lod", 28,500,0);

kald.setBonus(18, 1.1);
System.println(kald.setBonus());