zplata

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp15
{
    class Program
    {
        static void Main(string[] args)
        {
            Person person = new Person();
            Person person1 = new Person("Pesho", "Ivanov", 30, 1000);
            person1.Percent();
            person.Percent();

        }
    }
    class Person
    {
        private string firstname;
        private string lastname;
        private int age;
        private double zaplata;

        public Person(string firstname, string lastname, int age, double zaplata)
        {
            this.firstname = firstname;
            this.lastname = lastname;
            this.age = age;
            this.zaplata = zaplata;
        }
        public Person()
        {
            this.firstname = "Kaloyan";
            this.lastname = "Stoilov";
            this.age = 16;
            this.zaplata = 900;
        }
        public string Getfirstname()
        {
            return this.firstname;
        }
        public void Setfisrtname(string firstname)
        {
            this.firstname = firstname;
        }
        public string Getlastname()
        {
            return this.lastname;
        }
        public void Setlastname(string lastname)
        {
            this.lastname = lastname;
        }
        public int Getage()
        {
            return this.age;
        }
        public void Setage(int age)
        {
            this.age = age;
        }
        public void Percent()
        {
            Console.WriteLine("{0}", zaplata);
            int percent = int.Parse(Console.ReadLine());
            if (percent > 0 && percent <= 100)
            {

                if (age < 30)
                {
                    Console.WriteLine("{0}", (zaplata * percent) / 100 / 2 + zaplata);
                }
                else
                {
                    Console.WriteLine("{0}", (zaplata * percent) / 100 + zaplata);
                }

            }
        }

    }
}