下列IP地址属于B类IP地址的是______。

A．103.111.168.1

B．128.108.111.2

C．202.199.1.35

D．294.125.13.110

下列程序的运行结果是 【12】 。# include＜iostream. h＞class A{public: virtual void use(){cout ＜＜ "in A\n"; }}；class B:public A{public: virtual void use(){cout ＜＜ "in B\n"；}};class C: public B{public: virtual void use() {cout＜＜ "in C\n"; }}； void main(){ A *obj； obi=new C; obj-＞use() delete obj；}