travellingsalesman.city类型已包含经度的定义，我该怎么办？

Question

travellingsalesman.city类型已包含经度定义，我该怎么办？我不知道为什么会出现这个错误。         公共类城市         {             经度;             int纬度;             int DegreesToRadians;

        public City(string name, double latitude, double longitude)
        {
            Name = name;
            latitude = latitude;
            longitude = longitude;

        }

        public string Name { set; get; }
        public double Latitude { get; set; }
        public double longitude { get; set; }

        public double GetDistanceFromPosition(double latitude, double longitude)
        {
            var R = 6371; //raduis of the earth in km
            var dLat = DegreesToRadians(latitude - Latitude);
            var dlon = DegreesToRadians(longitude - Longitude);
            var a =
                Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +
                Math.Cos(DegreesToRadians(Latitude)) *
                Math.Cos(DegreesToRadinas(Latitude)) *
                Math.Sin(dlon / 2) * Math.Sin(dlon / 2)
                ;
            var c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
            var d = R * c; // distance in km
            return d;

        }

        private static double DegreesToRaduis(double deg)
        {
            return deg * System.Math.PI / 180;
        }

        public byte[] ToBinaryString()
        {
            var result = new byte[6];
            return result;
        }
    }
}

Answer 1

我想你想要这个：

    public City(string name, double latitude, double longitude)
    {
        Name = name;
        Latitude = latitude;
        Longitude = longitude;

    }

    public string Name { set; get; }
    public double Latitude { get; set; }
    public double Longitude { get; set; }

修改

控制台应用的完整源代码，没有错误（在您的示例中，DegreesToRadians也拼错了几次）。

using System;

class Program
{
    static void Main(string[] args)
    {
        TravelingSalesman ts = new TravelingSalesman();
        ts.City("Greenwich", 0.0, 0.0);
    }
}

public class TravelingSalesman
{
    public void City(string name, double latitude, double longitude)
    {
        Name = name;
        Latitude = latitude;
        Longitude = longitude;
    }

    public string Name { set; get; }
    public double Latitude { get; set; }
    public double Longitude { get; set; }

    public double GetDistanceFromPosition(double latitude, double longitude)
    {
        var R = 6371; //raduis of the earth in km
        var dLat = DegreesToRadians(latitude - Latitude);
        var dlon = DegreesToRadians(longitude - Longitude);
        var a =
            Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +
            Math.Cos(DegreesToRadians(Latitude)) *
            Math.Cos(DegreesToRadians(Latitude)) *
            Math.Sin(dlon / 2) * Math.Sin(dlon / 2)
            ;
        var c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
        var d = R * c; // distance in km
        return d;

    }

    private static double DegreesToRadians(double deg)
    {
        return deg * System.Math.PI / 180;
    }

    public byte[] ToBinaryString()
    {
        var result = new byte[6];
        return result;
    }
}