19. 택배 요금 계산 시뮬레이션 C#

택배 요금 계산 시뮬레이션 클래스 다이어그램

소스 코드

City.cs

using System;

namespace 택배_요금_계산_시뮬레이션
{
    public class City
    {
        readonly double relative_position;
        public string Name
        {
            get;
            private set;
        }
        public City(string name, double relative_position)
        {
            Name = name;
            this.relative_position = relative_position;
        }
        public double CalculateDistance(City city)
        {
            double distance = relative_position - city.relative_position;
            return Math.Abs(distance);
        }
    }
}

 

---

Parcel.cs

namespace 택배_요금_계산_시뮬레이션
{
    public class Parcel
    {
        public const int base_fee = 100;
        double weight;
        public Parcel(double weight)
        {
            this.weight = weight;
        }
        public double CalculateFee(double distance)
        {
            return weight * base_fee * distance;
        }
    }
}

---

Appliation.cs

using System;
using System.Collections.Generic;

namespace 택배_요금_계산_시뮬레이션
{
    class Application
    {
        #region 단일체 패턴
        static Application application;
        static Application()
        {
            application = new Application();
        }
        Application()
        {
        }
        #endregion
        List<City> cities = new List<City>();
        internal static void Run()
        {
            application.Init();
            application.Simulation();
        }

        private void Simulation()
        {
            City dep_city = SelectCity("도착 도시");
            if(dep_city == null)
            {
                Console.WriteLine("잘못 선택하였습니다.");
                return;
            }
            City arr_city = SelectCity("출발 도시");
            if(arr_city == null)
            {
                Console.WriteLine("잘못 선택하였습니다.");
                return;
            }
            Parcel parcel = MakeParcel();
            PrintDeliveryFee(dep_city, arr_city, parcel);
        }

        private void PrintDeliveryFee(City dep_city, City arr_city, Parcel parcel)
        {
            double distance = dep_city.CalculateDistance(arr_city);
            Console.WriteLine("택배 요금:{0}원", parcel.CalculateFee(distance));
        }

        private Parcel MakeParcel()
        {
            Console.WriteLine("무게 (Kg):");
            double weight = 0;
            double.TryParse(Console.ReadLine(), out weight);
            return new Parcel(weight);
        }

        private City SelectCity(string msg)
        {
            Console.Write("{0} (", msg);
            for(int i = 0; i<cities.Count; i++)
            {
                Console.Write("{0}:{1} ", i, cities[i].Name);
            }
            Console.Write("):");

            int index = 0;
            if(int.TryParse(Console.ReadLine(), out index)==false)
            {
                return null;
            }
            if((index<0)||(index>=cities.Count))
            {
                return null;
            }
            return cities[index];
        }

        private void Init()
        {
            cities.Add(new City("부산", 0));
            cities.Add(new City("대구", 105.84));
            cities.Add(new City("대전", 259.24));
            cities.Add(new City("서울", 397.40));
        }
    }
}

---

Program.cs

//http://ehpub.co.kr
//실습으로 다지는 C#
//택배 요금 계산 시뮬레이션

namespace 택배_요금_계산_시뮬레이션
{
    class Program
    {
        static void Main(string[] args)
        {
            Application.Run();
        }
    }
}

[실습으로 다지는 C#] 19.택배 요금 계산 시뮬레이션 – 언제나 휴일