下列类的定义中,有( )处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive: public Base { public: Derive(): Base(0){} Derive(int x) { d=x; } void setvalue(int i) { data=i; } private: d; }A.1B.2C.3D.4
下列类的定义中,有( )处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive: public Base { public: Derive(): Base(0){} Derive(int x) { d=x; } void setvalue(int i) { data=i; } private: d; }
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下列类的定义中,有( ) 处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive: public Base { public: Derive(): Base(O) { } Derive(int x) { d=x; } void setvalue(int i) { data=i; } private: d; };A.1B.2C.3D.4
为完成下面的程序,应在划线处填入的语句是includeusingnamespace std;class Base{pri 为完成下面的程序,应在划线处填入的语句是 #include<iostream> using namespace std; class Base { private: 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 }; int main() { Derived Obj; return 0; }A.Derived(int i):Base(i){}B.Derived(){}C.void Derived (int i):Base(i){}D.Derived(int i){Base(i);}
下列类的定义中,有( )处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive : public Base { public: Derive() : Base(0) {} Derive (int x) { d=x; } void setvalue(int i) { data=i; } private: d; };A.1B.2C.3D.4
有如下程序: include using namespace std class Base{ int b; public: Base(int i) { 有如下程序:include<iostream>using namespace stdclass Base{int b;public:Base(int i) {b=i;}Void disp ( ) {cout<<"Base:b="<<b<<''; }};class Base1:virtual public Base{public:Base1(int i):Base(i){}};class Base2:virtual public Base{public:Base2(int i):Base(i){}};class Derived:public Basepublic Base1{int d;public:Derived(int i ,int j):Base1(j),Base2(j),【 】{ d=i; }void disp() {cout<<"Derived:d="<<d<<' ';}};int main()Derived objD(1,2);objD. disp()objD. Base::disp();objD. Base1::disp()objD. Base2::disp();return 0;}请将程序补充完整,使程序在运行时输出:Derivd:d=1 Base:b=2 Base:b=2 Base:b=2
下面程序的打印结果是【】。 include using namespace std; class Base { public:Base(i 下面程序的打印结果是【 】。include <iostream>using namespace std;class Base{public:Base(int x){a=x;}void show(){cout<<a;}private:int a;};class Derived : public Base{public:Derived(int i) :Base(i+1) ,b(i) { }void show(){cout<<b;}private:int b;};int main ( ){Base b(5) , *pb;Derived d(1);pb=d;pb->show();return 0;}
为完成下面的程序,应在划线处填入的语句是()。includeusingnamespacestd;classBase{pr 为完成下面的程序,应在划线处填入的语句是( )。 #include <iostream> using namespace std; class Base { private: 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 }; int main() { Derived Obj; return 0; }A.Derived(int i):Base(i){}B.Derived(){}C.voidDerived(int i):Base(0){}D.Derived(int i){Base(i);}
下列类的定义中,有( )处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive : public Base { public: Derive() : Base(O) {} Derive (int x) { d=x; } void setvalue(int i) { data=i; } private: int d; };A.1B.2C.3D.4
有以下程序:inClUdeusingnamespacestd;ClassBase{public: Base(intx) {a=x; } voidsh 有以下程序: #inClUde <iostream> using namespace std; Class Base { public: Base(int x) { a=x; } void show() { cout<<a; } private: int a; }; class Derived : public Base { public: Derived(int i) :Base(i+1),b(i){} void Show() { cout<<b; } private: int b; }; int main() { Base b(5),*pb; Derived d(1); pb=d; pb->show(); return 0; } 运行后的输出结果是( )。A.1B.5C.2D.0
下列类的定义中,有( )处语法错误。 class Base { publiC: Base(){} Base(int i) { data=i; } ptivate: int data; }; class DeriVe:public Base { public: Derive():Base(0){} Derive(int x) { d=x; } void setvalue(int i) { data=i; } private: d; };A.1B.2C.3D.4