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若有以下程序: #include <iostream> using namespace std; class A { private: int a; public: A(int i) { a=i; } void disp () { cout<<a<<","; } }; class B { private: int b; public: B(int j) { b=j; } void disp () { cout<<b<<","; } }; class C : public B,public A { private: int c; public: C(int k):A(k-2),B(k+2) { c=k; } void disp () { A::disp(); B::disp(); cout<<c<<endl; } }; int main() { C obj(10); obj.disp(); return 0; }

单选题
2022-02-24 18:07
A、10,10,10
B、10,12,14
C、8,10,12
D、8,12,10
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正确答案
D

试题解析
解析:本题考核派生类构造函数的使用。本题中,派生类c具有多重继承关系,所以在派生类C的构造函数中应该包含基类A和B的成员初始化列表。

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