我做了一个关于继承类的代码，怎么老是出现声明的类受保护的错误提示，请高手看下下啊

[QUOTE][CODE]是类找不到的问题，我改了一下，加了注释，界面可以出来，但是结果好象不对，你的算法有误，我就不插手了[/QUOTE]

[此贴子已经被作者于2006-5-8 16:02:58编辑过]

public dcomplexnumber x;
public dcomplexnumber y;

private void button1_Click(object sender, System.EventArgs e)
{

x=new dcomplexnumber (Int32.Parse (textBox1.Text ),Int32.Parse (textBox2.Text ));
textBox1.Clear ();
textBox2.Clear ();
label3.Text ="第一个复数为"+x.ttostring ();
}

private void button2_Click(object sender, System.EventArgs e)
{
y=new dcomplexnumber (Int32.Parse (textBox1.Text ),Int32.Parse (textBox2.Text ));
textBox1.Clear ();
textBox2.Clear ();
label3.Text ="第二个复数为"+y.ttostring ();
}

public static complexnumber operator +(complexnumber c1,complexnumber c2)
{
return new complexnumber( c1.real+c2.real ,c1.imaginary +c2.imaginary );
}

谢谢各位了