using System;

public class Program

{

    public static void Main()

    {

        var bmi = new BMI(120, 1.75, HeightEnum.M);

            Console.WriteLine("身高:" + bmi.Height + bmi.HeightEnum);

            Console.WriteLine("體重:" + bmi.Weigth);

            Console.WriteLine("BMI:" + bmi.ComputeResult());

            Console.WriteLine("提示:" + bmi.GetDisplayResult(Sex.Men));

​

​

    }

    public enum Sex

    {

        Men,

        Women

    }

​

    public enum HeightEnum

    {

        CM,

        M

    }

​

    interface IHealth

    {

        double Weigth { get; }

​

        double Height { get; }

​

        HeightEnum HeightEnum { get; }

​

​

        double ComputeResult();

​

        string GetDisplayResult(Sex sexType);

    }

​

    public class BMI : IHealth

    {

        private double _weigth;

​

        public double Weigth

        {

            get { return _weigth; }

            private set { _weigth = value; }

        }

​

        private double _height;

​

        public double Height

        {

            get

            {

                if (HeightEnum == HeightEnum.M)

                    return _height;

                else

                    return _height / 100;

            }

            private set { _height = value; }

        }

​

        private HeightEnum _HeightType;

​

        public HeightEnum HeightEnum

        {

            get { return _HeightType; }

            private set { _HeightType = value; }

        }

​

​

        public BMI(double weigth, double heigth, HeightEnum heigthType = HeightEnum.M)

        {

            Weigth = weigth;

            Height = heigth;

            HeightEnum = heigthType;

        }

​

​

        public virtual double ComputeResult()

        {

            return Weigth / (Height * Height);

        }

​

        public virtual string GetDisplayResult(Sex sexType)

        {

            var result = "";

            switch (sexType)

            {

                case Sex.Men:

                    result = GetTipText(20, 25);

                    break;

                case Sex.Women:

                    result = GetTipText(18, 22);

                    break;

            }

            return result;

        }

​

        private string GetTipText(int min, int max)

        {

            if (ComputeResult() < min)

                return "太瘦";

​

            if (ComputeResult() > max)

                return "太胖";

​

            return "剛好";

        }

    }

}