若有以下程序:include using namespace std;class datapublic:int x;data(int x) { d 若有以下程序: #include <iostream> using namespace std; class data public: int x; data(int x) { data: :x=x; }; class A private: data d1; public: A(int x): d1(x){} void dispa() { cout<<d1.x<<","; } }; class B: public A { private: data d2; public: B(int x): A(x-1),d2(x){} void dispb() { cout<<d2.x<<end1; } }; class C: public B { public: C(int x): B(x-1){} void disp() { dispa(); dispb(); } }; int main() { C obj(5); obj.disp(); return 0; 程序执行后的输出结果是 }A.5,5B.4,5C.3,4D.4,3

若有以下程序:include using namespace std;class datapublic:int x;data(int x) { d

若有以下程序: #include <iostream> using namespace std; class data public: int x; data(int x) { data: :x=x; }; class A private: data d1; public: A(int x): d1(x){} void dispa() { cout<<d1.x<<","; } }; class B: public A { private: data d2; public: B(int x): A(x-1),d2(x){} void dispb() { cout<<d2.x<<end1; } }; class C: public B { public: C(int x): B(x-1){} void disp() { dispa(); dispb(); } }; int main() { C obj(5); obj.disp(); return 0; 程序执行后的输出结果是 }

A.5,5

B.4,5

C.3,4

D.4,3


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若有以下程序:includeusing namespace.std;class data{public: int x; data (int x) 若有以下程序: #include<iostream> using namespace.std; class data { public: int x; data (int x) { data::x=x; } ); class A { private: data d1; public: A(int x) :dl(X){} void dispa() { cout<<dl.X<<","; } }; class B:public A { private: data d2; public: B(int x) : A(x-1),d2(x){} void dispb() { cout<<d2.x<<endl; } }; class C:public B { public: C(int x) :B(x-1){} void disp() { dispa(); dispb(); } }; int main() { C obj(5); obj.disp(); return 0; } 程序执行后的输出结果是A.5,5B.4,5C.3,4D.4,3

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