c#不包含适合于入口点的静态“Main”方法

Question

public class myRect
{
private System.Drawing.Point p0;
private int a, b;
public myRect(int aa, int bb, System.Drawing.Point p)
{
a = aa; b = bb; p0 = p;
}
public int Area() //求面积
{ return(a * b); }
public int round() //求周长
{ return(2 * (a + b)); }
public void move(int dx, int dy) //移动顶点
{
p0.X += dx;
p0.Y += dy;
}
}
源代码是这样的 调试之后出现不包含适合于入口点的静态“Main”方法。
求大神指教，本人新手渣子一个

Answer 1

缺少了主函数main
代码如下
class Program
{
public class myRect
{
private System.Drawing.Point p0;
private int a, b;
public myRect(int aa, int bb, System.Drawing.Point p)
{
a = aa; b = bb; p0 = p;
}
public int Area() //求面积
{ return (a * b); }
public int round() //求周长
{ return (2 * (a + b)); }
public void move(int dx, int dy) //移动顶点
{
p0.X += dx;
p0.Y += dy;
}
}

    static void Main(string[] args)
    {
        Point p = new Point(5, 5);
        myRect m = new myRect(5, 2, p);

        Console.WriteLine(m.round());
        Console.ReadKey();
    }
}