对象成员解析

1、、选择题123456789101112DDBDCBBABABC131415161718192021222324BDADADAABCDA、填空题1、实例，对象2、Public,private,protected3、Private,protected,public4、对象成员5、Private6、类名，对象7、构造函数&成员对象9、缺省构造函数10、main ()11、静态12、friend void fun();三、改错题1、 Obj2.f();错误，常对象不能访问不用const修饰的成员函数。2、X(int aa)a(aa) 初始化列表，改为 X(int aa):a(aa)或X(i nt aa

2、)a=aa;四、写程序执行结果1、con structori=5i=102、i=0,k=2i=0,k=23、Con structor55Destructor54、a=7,b=85、x=1,y=10,r=1x=2,y=10,r=2 disp1:x=1,y=96、disp2:x=2,y=8五、程序填空1、aabb2、MyClass(MyClass &mc) MyClass(MyClass &mc) mc.X Y=mc.Y3、void init(int k,int t);Couta.Getx() ”,”a.GetY()4、int test:x=5;Int test:fun()5、M a(1)a.sh

3、ow()6、return xA &r=a7、class two x=r.y8、return x int x9、int num,floatt.n六、编程题1、 #include using namespace std; class box public:box(float length,float height,float width); float v(); float s();private:float blength,bheight,bwidth; ;box:box(float length,float height,float width) blength=length;bheight=

4、height; bwidth=width;float box:v()return blength*bheight*bwidth;float box:s()return (blength*bheight+bheight*bwidth+bwidth*blength)*2;void main()float length,height,width; cinlengthheightwidth; box box1(length,height,width); coutbox1 的体积 :box1.v(); coutbox1 的表面积： box1.s();2、 #include #include using

5、namespace std;class pointpublic:point(float px,float py);point(point &p);void negate();float norm();void print();private:float x,y;point:point(float px,float py)x=px;y=py;point:point(point &p)x=p.x;y=p.y;void point:negate()x=-1.0*x;y=-1.0*y;float point:norm()return sqrt(x*x+y*y);void point:print()co

6、utx=xendl;couty=yendl;void main()point p1(1,2);p1.print();point p2(p1);p2.norm()endl;coutp1 距离为： p1.norm() p2 距离为： p1.negate();p1.print();3、#include using namespace std;class Vectorpublic:Vector(float x,float y);Vector();friend Vector add(Vector v1,Vector v2);friend Vector sub(Vector v1,Vector v2);f

7、loat getx()return vx;float gety()return vy;private:float vx,vy;Vector:Vector()Vector:Vector(float x,float y)vx=x;vy=y;Vector add(Vector v1,Vector v2)Vector v;v.vx=v1.vx+v2.vx;v.vy=v1.vy+v2.vy;return v;Vector sub(Vector v1,Vector v2)Vector v;v.vx=v1.vx-v2.vx ;v.vy=v1.vy-v2.vy;return v;void main()Vect

8、or vector1(1,2);Vector vector2(2,1);Vector vectoradd,vectorsub;vectoradd=add(vector1,vector2);vectorsub=sub(vector1,vector2);coutvectoradd=vectoradd.getx(),vectoradd.gety()endl; coutvectorsub=vectorsub.getx(),vectorsub.gety()endl;4、#include using namespace std;class studentpublic:student()totalstudents+;student()totalstudents-;static int Getstudentnumber()return to