写出下列程序代码运行的结果【】。 include<iostream.h> class A{public:virtual void disp() {cout

写出下列程序代码运行的结果【】。include＜iostream.h＞classA{public:virtualvoiddisp(){cout＜＜"calssA!"＜＜(end1;}}:class
B、publicA{public:voiddisp(){cout＜＜"classB!"＜＜end1:}};class
C、publicA{public:voiddisp(){cout＜＜"classC!"(＜end1;}};voidm