有如下类说明: class TestClass{ int x; public: TestClass(int n){x=n;} }; class TestClass1:public TestClass{ int y; public: TestClass1(int a,int b); }; 在构造函数TestClass1的下列定义中,正确的是( )。A.TestClass1::TestClass1 (int a,int b):x(a),y(b){}B.TestClass1::TestClass1 (int a,int b):TestClass(a),y(b){}C.TestClass1::TestClass1 (int a,int b):x(a),TestClass1(b){}D.TestClass1::TestClass1 (int a,int b):TestClass(a),TestClass1(b){}

有如下类说明: class TestClass{ int x; public: TestClass(int n){x=n;} }; class TestClass1:public TestClass{ int y; public: TestClass1(int a,int b); }; 在构造函数TestClass1的下列定义中,正确的是( )。

A.TestClass1::TestClass1 (int a,int b):x(a),y(b){}

B.TestClass1::TestClass1 (int a,int b):TestClass(a),y(b){}

C.TestClass1::TestClass1 (int a,int b):x(a),TestClass1(b){}

D.TestClass1::TestClass1 (int a,int b):TestClass(a),TestClass1(b){}


相关考题:

以下程序输出结果为______。 include using namespace std; class TestClass 1 { publi 以下程序输出结果为______。include<iostream>using namespace std;class TestClass 1{public:TestClass1(){}TestClass1(int i){x1=i;}void dispa(){cout<<"x1="<<x1<<",";}private:int x1;}:class TestClass2:public TestClass1{public:TestClass2(){}TestClass2(int i):TestClass1(i+10){x2=i:}void dispb(){dispa();cout<<"x2="<<x2<<end1;}private:int x2:}:int main(){TestClass2 b(2):b.dispb();return 0;}

有下列程序:include using namespace std; class TestClass1 { public: TestClass1(){ 有下列程序:include<iostream>using namespace std;class TestClass1{public:TestClass1(){cout<<"A";}};class TestClass2<public:TestClass2(){cout<<"B";}};class TestClass3:public TestClass1{TestClass2 b;

有如下程序:includeusing namespace std;class TestClass{private;char c;public;Tes 有如下程序: #include<iostream> using namespace std; class TestClass { private; char c; public; TestClass (char n):c(n){} ~TestClass () { cout<<c; } }; class TestClass1:public TestClass { Private: char c; public: TestClass1(char n):TestClass (n+1),c(n){} ~TestClass1() { cout<<c; } }; int main() { TestClass1 obj('x'); return 0; } 执行上面的程序输出( )。A.xyB.yxC.xD.y

有如下程序:includeusing namespace std;class TestClass1{public:TestClass1 (){cou 有如下程序: #include<iostream> using namespace std; class TestClass1 { public: TestClass1 (){cout<<"TestClass1";} ~TestClass1 (){cout<<"~TestClass1";} }; class TestClass2:public TestClass1 { TestClass1 *p; public: Testclass2(){cout<<"TestClass2";p=new TestClass1();} ~TestClass2(){cout<<"~TestClass2";delete p;} ); int main() { TestClass2 obj; return 0; } 执行这个程序的输出结果是( )。A.TestClass2TestClass1TestClass1~TestClass1~TestClass2~TestClass1B.TestClass1TestClass2TestClass1~TestClass2~TestClass1~TestClass1C.TestClass2TestClass1TestClass1~TestClass2~TestClass1~TestClass1D.TestClass1TestClass2TestClas1~TestClass1~TestClass2~TestClass1

下列程序输出结果为: include using namespace std; class TestClass1 { public: Test 下列程序输出结果为:include<iostream>using namespace std;class TestClass1{public:TestClass1(){}TestClass1(int i){x1=i;}void dispa(){cout<<"x1="<<x1<<",";}private:int x1;};class TestClass2:public TestClass1{public:TestClass2(){}TestClass2(int i):TestClass1(i+10){x2=i;}void dispb(){dispa();cout<<"x2="<<x2<<endl;}private:int x2;};int main(){TestClass2 b(2);b.dispb();return 0;}

若有以下程序: include using namespace std; class TestClass 1 { public: TestClass 若有以下程序:include<iostream>using namespace std;class TestClass 1{public:TestClass1(){X=0;}int x;};class TestClass2:virtual public TestClass1{public:TestClass2(){x=10;}};class TestClass3:virtual public TestClass 1{public:TestClass3(){x=20;}};class TestClass4:public TestClass2, protected TestClass3{ };int main(){TestClass4 obj;cout<<obj.x<<end1;return 0:}该程序运行后的输出结果是______。

有如下程序: #includediostream usingnamespqcestd; classTestClass { private; charC; public; TestClass(charn):c(n){} ~TestClass() { coutc; } }; classTestClassl:publicTestClass { private: charC; public: TestClassl(charn):TestClass(n+1),c(n){}~TestClassl() { coutc; } }; intmain() { TestClasslobj(X); return0; } 执行上面的程序将输出( )。A.xyB.yxC.XD.y

有如下程序:includeusing namespace std;Class TestClass{int a;public:TestClass(in 有如下程序: #include<iostream> using namespace std; Class TestClass {int a; public: TestClass(int x){a=x;} void show(){cout<<a;}}; class TestClass1:public TestClass {int b; public: TestClass1(int i):TestClass(i+1),b(i){} voiA.5B.1C.0D.2

阅读以下说明和Java程序,填写程序中的空(1)~(6),将解答写入答题纸的对应栏内。【说明】以下Java代码实现一个简单绘图工具,绘制不同形状以及不同颜色的图形。部分接口、类及其关系如图5-1所示。【Java代码】interface?DrawCircle?{? //绘制圆形 public(1) ;}class?RedCircle?implements?DrawCircle?{? ?//绘制红色圆形???????public?void?drawCircle(int?radius,intx,?int?y)??{????????????System.out.println("Drawing?Circle[red,radius:"?+?radius?+",x:"?+?x?+?",y:"?+y+?"]");???????}}class?GreenCircle?implements?DrawCircle?{????//绘制绿色圆形??????public?void?drawCircle(int?radius,?int?x,int?y)?{???????????System.out.println("Drawing?Circle[green,radius:"?+radius+",x:?"?+x+?",y:?"?+y+?"]");??????}}abstract?class?Shape?{????//形状? protected? ? (2)???;? ? public?Shape(DrawCircle?drawCircle)?{? ?this.drawCircle=?drawCircle;? ? ? public?abstract?void?draw();}class?Circle?extends?Shape?{? //圆形? ?private?int?x,y,radius;? public?Circle(int?x,int?y,intradius,DrawCircle?drawCircle)?{? ?(3)???;? this.x?=?x;? ? ? this.y?=?y;? ?this.radius?=radius;? }? ? ?public?void?draw()?{? ? drawCircle.? ?(4)? ?;? ? ? }}public?class?DrawCircleMain?{? public?static?void?main(String[]?args)?{? Shape?redCircle=new?Circle(?100,100,10,? (5) );//绘制红色圆形? Shape?greenCircle=new?Circle(200,200,10,(6) );//绘制绿色圆形? ?redCircle.draw(); greenCircle.draw();? ?}}