改错。 ( ) 1. We are happy family . ______________ A B C ( ) 2. They are talk . ______________ A B C ( ) 3. My family live in China . ______________ A B C
【简答题】要使程序执行后的输出结果为 ABCD ,应在横线处添加语句( )。 #include using namespace std; class A { public:A(){cout< class B: ___________ { public:B(){cout< class C:virtual public A { public:C(){cout< class D:public B,publi...
【单选题】要使程序执行后的输出结果为ABCD,应在横线处添加语句( )。 #include<iostream> using namespace std { public:A(){cout<<'A'} } class B=______ { public:B(){cout<<'B'} } class C:virtual public A { public:C(){cout<<'C'} } class D:pub...