Question

c# 要求定义一个point类

c# 要求定义一个point类两个私有字段表示两个坐标值
一个构造器函数通过传入的参数对坐标值初始化
两个只读属性对坐标值的读取
一个方法用来计算p点和自己的距离

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Answer 1

public class Point
{
private double _x;
private double _y;
public Point (double x,double y)
{
_x = x;
_y = y;
}
public double getX()
{
return _x;
}
public double getY()
{
return _y;
}
public double calDistance(Point p)
{
double distance;
distance = Math.Sqrt((this._x - p._x) * (this._x - p._x) + (this._y - p._y) * (this._y - p._y));
return distance;
}
}

protected void Button1_Click(object sender, EventArgs e)
{
Point p1 = new Point(Convert.ToDouble(TextBox1.Text), Convert.ToDouble(TextBox2.Text));
Point p2 = new Point(Convert.ToDouble(TextBox3.Text), Convert.ToDouble(TextBox4.Text));
TextBox5.Text= p1.calDistance(p2).ToString();
}