static void Main(string[] args)
{
triangle A = new triangle(3, 4, 5);
Console.WriteLine(A.isTriangle());
Console.WriteLine(A.getMeasure());
rectangle B = new rectangle(3, 4);
Console.WriteLine(B.getMeasure());
square C = new square(3);
Console.WriteLine(C.getMeasure());
}
public static shape createShape(string s)
{
shape sp = null;
switch (s)
{
case "三角形":
sp = new triangle();
break;
case "矩形":
sp = new rectangle();
break;
case "正方形":
sp = new square();
break;
default:
throw new Exception("参数错误");
}
return(sp);
}