c++面向对象程序设计-考试题及习题讲解(免费下载)

1.在C++中，函数原型不能标识(D)A.函数的返回类型B.函数参数的个数CD.函数的功能p108有叙述CB)？A.继承实现B.调用成员函数实现CD.函数重载实现3.对于任意一个类，析构函数的个数最多为(B)A.0B.1C.2D.34.下面函数模板定义中不正确的是(A)A.template<classQ>B.template<classQ>QF(Qx){QF(Qx){returnQ+x;returnx+x;}}CtemplateclassT>D.template<classT>TF(Tx){TF(Tx){returnx*x;returnx>1;}}5.友元关系不能(cA)?A.继承C另一个类的关系p316A.若文件存在，将文件写指针定位于文件尾；若文件不存在，建立一个新文件B7.下面说法正确的是(B)A.私有继承的公有成员B.公有继承的私有成员CD.公有继承的公有成员关派生类对象和基类对象的关系，不正确的叙述是(A)A.派生类的对象可以赋给基类的对象C成员virtualvoidfunc1(){}voidfunc2(){}publicAvoidfunc1(){cout<<〃classBfunc1〃<<end1;}virtualvoidfunc2(){cout<<〃classBfunc2〃<<end1;}下面正确的叙述是(C)C.B::func1()是虚函数，而A::func2()不是虚函数的对象的成员所用的运算符是this指针。Aintaaintbb{a=aa;b=bb;}Axy(4);templateclassT>TanyTaTbxa,y=b;}Tsumreturnxy;}Tanyintobj100);voidfunctwo;friendvoidonefunctwo;voidfunc(two&)错误,不能前voidone::func(two&r){}public:voidfun(){cout<<〃a.fun〃<<endl;}classBpublic:voidfun(){cout<<〃b.fun〃<<endl;}voidgun(){cout<<〃b.gun〃<<endl;}classCpublicA,publicB{blicvoidguncoutcgunendlvoidhunfun改为voidhun(){A:fun();}或classLocation{intX,Y=20;Y=20出错,类定义中不能显式地将类的数据成oXintZeroYatradiusvoidinitintinitX,intinitY);A(intaa=0){}~A(){_deletea_;}//释放动态存储空间templateclassT>T*f(T*a,T*b,intn){T*c=_newT[n]___;forintiin;i++)c〔i〕=_a[i]+b[i]__;}voidmain(){intab={10,20,30,40},*p;forintii5;i++)outpiendlvoidmain(){charuser用于存放输入的口令coutpleaseinputyourpassword<endl;__cin>>user;_//输入口令SScoutyourpasswordiscorrect<<endl;coutyourpasswordiserrorendl}tionintden;//分子intnum;//分母friendostreamoperatorostream,fraction);…ostreamoperatorostreamosfractionfr_cout<<den<<”/”<<num<<endl__;return___os______;}se____int__func(){return0;}erivedpublicbase____void_____setValue(intx,inty,intz){a=x;b=y;c=z;}abcvoidmain(){eddbfuncsetValuedfuncoutpbfuncend}31.＃include<iostream.h>voidmain(){}32.＃include<iostream.h>templateclassT>TfT*a,T*b,intn){Tforintiin;i++)}voidmain(){outfcdendl}33.＃include<iomanip.h>voidmain(){forintii4;i++)coutendlsetfill)<<setw(4-i)<<′0′setfillsetwiii}stotalWeightw{eighwtalWeightw}goodsgd{weightgdweightalWeightweight}~goods(){talWeightweight}{}tgetTotal{}tvoidmain(){coutTheinitialweightofgoods:〃<<goods::getTotal()<<endl;gwwgwcoutThetotalweightofgoods:〃<<goods::getTotal()<<endl;}35.＃include<iostream.h>A(){}virtualvoidfunc(){cout<<〃DestructorA〃<<endl;}~A(){func();}publicAvoidfunc){cout<<〃Destr