题目详情
单选题 What will be displayed by the following program?#include <iostream>using namespace std;class CC {public: virtual string toString( ) { return "C"; }};class BB: public CC { string toString( ) { return "B"; }};class AA: public BB { virtual string toString( ) { return "A"; }};void displayObject(CC p) { cout << p.toString( );}int main( ) { AA a; BB b; CC c; displayObject(a); displayObject(b); displayObject(c); return 0;}
A. ABC
B. CBA
C. AAA
D. BBB
E. CCC

学科:C++语言程序设计
时间:2025-12-18 02:35:52
相关题目
相关作业
