在PowerPoint中编辑多媒体演示文稿时，点击F5键，将执行（）操作。

下列程序的运行结果是______。 #include＜iostream.h＞ class Base { public: virtual void func(int i){cout＜＜"class Base:"＜＜i＜＜end1;) }; class Derived: public Base { public: void func(double d){cout＜＜"class Derived:"＜＜d＜＜endl;}}; void main( ) { Base a,*p=a; Derived b; p=&b; (*p).func(3.3); }