calss A()
{
public A(){Console.Write("A");}
}
Class B : A
{
public B(){Console.Write("B");}
}
main ()
{
A a = new B();
a = new A();
}这题目答案是什么?为什么?
{
public A(){Console.Write("A");}
}
Class B : A
{
public B(){Console.Write("B");}
}
main ()
{
A a = new B();
a = new A();
}这题目答案是什么?为什么?
B
A
懒得解释,无聊又简单。不会的人自己复习基础去