有如下程序: #includeiostream using namespace std; class Base{ int x: public: Base(int n=0):x(n){coutn;} int getXconst{return x;} }; cjass Derived:public Base{ int Y:. J;;Iublic: Derived(int m,int n):y(m),Base(n){coutm;} Derived(int m):Y(m){coutm;} }; int main { Derived dl(3),d2(5,7); retum 0; } 执行这个程序的输出结果是( )。A.375B.357C.0375D.0557

有如下程序: #include<iostream> using namespace std; class Base{ int x: public: Base(int n=0):x(n){cout<<n;} int getXconst{return x;} }; cjass Derived:public Base{ int Y:. J;;Iublic: Derived(int m,int n):y(m),Base(n){cout<<m;} Derived(int m):Y(m){cout<<m;} }; int main { Derived dl(3),d2(5,7); retum 0; } 执行这个程序的输出结果是( )。

A.375

B.357

C.0375

D.0557


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有以下程序: included using namespace std; class Base { public: Base( ) { x=0; } 有以下程序:included<iostream>using namespace std;class Base{public:Base( ){x=0;}int x;};class Derived1:virtual public Base{public:Derived1( ){x=10;}};class Derived2:virtual public Base{public:Derived2( ){x=20;}};class Derived: public Derived1,protected Derived2{ };int main( ){Derived obj;cout<<obj. x<<endl;return 0;}该程序运行后的输出结果是______。

有如下程序 include using namespace std; class Base { protected: 有如下程序 #include <iostream> using namespace std; class Base { protected: Base( ){cout<<'A'; } Base(char c) { cout<<c; } }; class Derived: public Base { public: Derived(char c){ cout<<c; } }; int main( ){ Derived d1 ('B'); return 0; } 执行这个程序屏幕上将显示输出A.BB.BAC.ABD.BB

有如下程序:includeusing namespace std;class Base{int x;public:Base(int n=0):x(n 有如下程序: #include<iostream> using namespace std; class Base{ int x; public: Base(int n=0):x(n){cout<<n;} int getX( )const{return x;} }; class Derived:public Base{ int y; public: Derived(int m,int n):y(m),Base(n){tout<<m;} Derived(int m):y(m){cout<<m;} }; int main( ){ Derived dl(3),d2(5,7); return 0; } 程序的输出结果是A.375B.357C.0375D.0357

有如下程序: include using namespace std; class Base { public: 有如下程序: #include <iostream> using namespace std; class Base { public: Base(int x=0) { cout<<x; } } class Derived: public Base{ public: Derived(int x=0) { cout<<x; } private: Base val; }; int main() { Derived d(1); return 0; }程序的输出结果是A.0B.1C.1D.1

有如下程序:includeusing namespace std;Class Base{public:Base(){cout 有如下程序: #include<iostream.h> using namespace std; Class Base { public: Base(){cout<<“BB”;f();} void{(){cout<<“BF”;} }; class Derived:public Base { public: Derived(){cout<<“DD”;} void f(){cout<<“Df”;) }; int mainA.BBBfDDB.BBDfDDDfC.DDD.DDBBBf

有如下程序:include using namespace std;class Base{public:Base(){cout 有如下程序:#include <iostream>using namespace std;class Base{ public: Base(){cout<<"BB"; f(); } Void f(){cout<<"Bf"; }};class Derived: public Base{ public: Derived() { cout<<"DD"; } void f() { cout<<"Df"; }};int main() { Derived d; return 0; }执行上面的程序将输出( )。A.BBBfDDB.BBDfDDDfC.DDD.DDBBBf

有如下程序: include using namespace std; class BASE { public 有如下程序: #include<iostream> using namespace std; class BASE { public: ~BASE(){cout<<"BASE";} }; class DERIVED:public BASE { public: ~DERIVED(){cout<<"DERIVED";} }; int main(){DERIVEDx;retum 0;} 执行后的输出结果是A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

有如下程序:includeusing namespace std;class Base{protected:Base(){cout 有如下程序: #include<iostream> using namespace std; class Base{ protected: Base(){cout<<'Base';} Base(char c){cout<<c;} }; class Derived:public Base{ public: Derived(char c){cout<<c;} }; int main(){ Derived d('Derived'); return 0; } 执行这个程序屏幕上将显示输出( )。A.DerivedB.DerivedBaseC.BaseDerivedD.DerivedDerived

如下程序的输出是includeusing namespace std;class Base{public:Base( ){cout 如下程序的输出是 #include<iostream> using namespace std; class Base{ public: Base( ){cout<<"BB";f( );} void f( ){cout<<"Bf";} }; class Derived:public Base{ public: Derived( ){eout<<"DD";} void f( ){cout<<"Df";} }; int main( ){Derived d;return 0;}A.BBBff)DB.BBDfDDDfC.DDD.DDBBBf

有如下程序:includeusing namespace std;class Base{public:Base(int x=0){cout 有如下程序: #include<iostream> using namespace std; class Base{ public: Base(int x=0){cout<<x;} }; class Derived:public Base{ public: Derived(int x=0){cout<<x;} private: Base val; }; int main( ){ Derived d(1); return 0; } 程序的输出结果是A.0B.1C.01D.001

有以下程序:include using namespace std; class Base { public: Base() { K=0; } int 有以下程序:include<iostream>using namespace std;class Base{public:Base(){K=0;}int x;};class Derivedl:virtual public Base{public:Derivedl(){x=10;}};class Derived2:virtua1 public Base

有如下程序:include using namespace std;class BASE{public:~BASE(){cout 有如下程序: #include <iostream> using namespace std; class BASE{ public: ~BASE(){cout<<"BASE";} }; class DERIVED:public BASE{ public: ~DERIVED(){cout<<"DERIVED";} }; int main(){DERIVED x;return 0;} 执行后的输出结果是A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

有如下程序:includeusing namespace std;class BASE{public:~BASE( ){cout 有如下程序: #include<iostream> using namespace std; class BASE{ public: ~BASE( ){cout<<"BASE";} }; class DERIVED:public BASE{ public: ~DERIVED( ){cout<<"DERIVED";} }; int main( ){DERIVED x;return 0;} 程序的输出结果是A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

有以下程序 include using namespace std; class Base { int a; public: Base(int x) 有以下程序include <iostream>using namespace std;class Base{int a;public:Base(int x){ a=x; }void show(){ cout<<a; }class Derived : public Base{int b;public:Derived(int i) :Base(i+1),b(i){}void show() { cout<<b;};int main (){Base b(5),*pb;Derived d(1);pb=d;pb->show ();return 0;}运行后的打印结果是______。

有如下程序;include using namespace std;class Base{public;Base(inti){x=i;}void d 有如下程序; #include <iostream> using namespace std; class Base { public; Base(inti){x=i;} void dispa0{cout<<x<<',';} private; int x; }; class Derived;public Base { public; Derived(int i);Base(i+10) {x=i;) void dispb(){dispa();cout<<x<<end1;} private; int x; }; int main() { Derived b(2) ; b.dispb(); return 0; } 运行的结果是( )。A.2,2B.12,2C.12,10D.10,2

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有如下程序:include using namespace std;Class x{protected: int a;public: x() {a= 有如下程序: #include <iostream> using namespace std; Class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<A.1B.123C.242D.244

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如下程序执行后的输出结果是【】。include using namespace std; class Base { public: 如下程序执行后的输出结果是【 】。include <iostream>using namespace std;class Base{public:Base(int x,int y){a=x;b=y;}void Show(){cout<<"Base: "<<a<< ',' <<b<<" ";}private:int a,b;};class Derived : public Base{public:Derived(int x, int y, int z) : Base(x,y),c(z) { }void Show(){cout<<"Derived:"<<c<<end1;}private:int c;};int main(){Base b(100,100),*pb;Derived d(10,20,30);pb=b;pb->Show();pb=d;pb->Show();return 0;}

若有以下程序:include using namespace std;class Base{public:Base (){x=0;}int x;} 若有以下程序: #include <iostream> using namespace std; class Base { public: Base () { x=0; } int x; }; class Derived1 : virtual public Base { public: Derived1 () { x=10; } }; class Derived2 : virtual public Base { public: Derived2 () { x=20; } }; class Derived : public Derived1,protected Derived2{ }; int main() { Derived obi; cout<<obj.x<<endl; return 0; } 该程序运行后的输出结果是A.20B.30C.10D.0

有如下程序: #include<iostream) using namespace std; classBase{ public: Base(int x=0){cout<<x;} }; Class Derived:public Base{ public: Derived(int x=0){cout<<x;} private: Base Val; }; int main(){ Derived d(1); returnA.100B.000C.010D.001

若有以下程序:includeusing namespace Std;Class Base{public:Base(){x=0;}int x;};c 若有以下程序: #include<iostream> using namespace Std; Class Base {public: Base() {x=0;} int x;}; class Derivedl:virtua1 public Base {public: Derived1() {x=10;}}; class Derived2:virtual1 public Base {public: Derived2()A.20B.30C.10D.0

有如下程序: #inCludeiostream using namespaCe std; Class Base{ publiC: Base(int x=0){Coutx;} }; Class Derived:publiC Base{ publiC: Derived(int X=0){Coutx;} private: Base val; }; int main { Derived d(1); return 0; } 执行这个程序的输出结果是( )。A.0B.1C.01D.001

有如下程序:includeusing namespace std;class BASE{public:~BASE(){cout 有如下程序: #include<iostream> using namespace std; class BASE{ public: ~BASE(){cout<<"BASE";} }; class DERIVED:public BASE{ public: ~DERIVED(){cout<<"DERIVED";} }; int main(){DERIVED x;return 0;} 执行后的输出结果是( )。A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

在下面横线上填上适当的语句,完成程序。include using namespace std; class Base { in 在下面横线上填上适当的语句,完成程序。include<iostream>using namespace std;class Base{int x;public:Base(int i){x=i;}~Base(){});class Derived:public Base{public:______//完成类Derive构造函数的定义};iht main(){Derived obj