若有以下程序: #include <iostream> using namespace std; class point { private: int x, y; public: point ( ) { x=0; y=0; } void setpoint(int x1,int y1) { x=x1; y=y1;
A.12,12
B.5,5
C.12,5
D.5,12
下面程序执行的结果是【 】 include using namespace std; class A{ public: static in下面程序执行的结果是【 】include<iostream>using namespace std;class A{public:static int x;A(inty){cout<<x+y;}};int A::x=2;void main(){A a(5);}
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有以下程序:includeusing namespace std;definePl 3.14Class Point{private:int x,y有以下程序: #include<iostream> using namespace std; #definePl 3.14 Class Point {private: int x,y; public: Point(int a,intB) {X=a; y:b;} int getx() <return x;} int gety() {return y;}}; class Circle:public Point {priA.314B.157C.78.5D.153.86
有以下程序:includeincludeusing namespace std; class point{private:double有以下程序: #include<iostream> #include<math> using namespace std; class point { private: double x; double y; public: point(double a,double B) { x=a; y=b; } friend double distance (point a,point B) ;A.1B.5C.4D.6
若有以下程序: include usingnamespace std; class Sample { private: const int n;若有以下程序:include <iostream>using namespace std;class Sample{private:const int n;public:Sample(int i) :n(i) {)void print(){cout<<"n="<<n<<end1;}};int main(){sample a(10);a.print();return 0;}上述程序运行后的输出结果是【 】。
若有以下程序:include using namespace std;class A{private: int x;protected: int若有以下程序: #include <iostream> using namespace std; class A { private: int x; protected: int y; public: int z; void setx(int i) { x=i; } int getx () { return x; }; class B : protected A { public: void setvalue(int a, int b, int c) { setx (a); y=b; z=c; } void display() { cout<<getx ( ) <<", "<<y<<", "<<z<<", "<<end1; } }; int main () { B obj; obj.setvalue(5, 6, 7); obj.display ( ); return 0; } 程序运行后的输出结果是( )。A.产生语法错误B.7,6,5C.5,6,7D.7,5,6
若有以下程序:include using namespace std;class Base{private: int a,b;public: Ba若有以下程序: #include <iostream> using namespace std; class Base { private: int a,b; public: Base(int x, int y) { a=x; b=y; } void show() { cout<<a<<", "<<b<<end1; } }; class Derive : public Base { private: int c, d; public: Derive(int x, int y, int z,int m):Base(x,y) { c=z; d=m; } void show() { cout<<c<<", "<<d<<end1; } }; int main ( ) { Base b(50,50) ,*pb; Derive d(10,20,30,40); pb=&d; pb->show {); return 0; }A.10,20B.30,40C.20,30D.50,50
若有以下程序include using namespace std;class A{public: A(int i,int j) {a=i;b=j若有以下程序 #include <iostream> using namespace std; class A { public: A(int i,int j) { a=i; b=j; } void move(int x, int y) { a+=x; b+=y; } void show() { cout < <a < <" , " <<b<< end1; } private: int a,b; }; class B : private A { public: B(int i,int j) :A(i,j) {} void fun ( ) { move (3, 5); } void f1 ( ) { A::show(); } }; int main ( ) { B d(3,4); d. fun ( ); d.f1(); return 0; } 程序执行后的输出结果是 ( )。A.3,4B.6,8C.6,9D.4,3