static void Main(string[] args) { CPoint p1 = new CPoint(3, 3); CPoint p2 = new CPoint(6, 6); CPoint p3 = new CPoint(4, 6); CPoint p4 = new CPoint(4, 9); Cline L = new Cline(); int line1 = (int)L.GetLine(p1, p2); int line2 = (int)L.GetLine(p3, p4); CRect a = new CRect(); int area = a.GetArea(line1, line2); int zhouchang = a.GetZhouchang(line1, line2); Console.WriteLine("p1和p2,p3和p4组成的线段L1和L2分别是{0}和{1}\n", line1, line2); Console.WriteLine("用L1和L2组成的矩形的面积和周长分别是{0}和{1}\n", area, zhouchang); Console.ReadKey(); }