程序設(shè)計(jì)語言a2010期中試卷參

上海交 大 試卷（A）參考答（2009至2010學(xué)年第_二_學(xué)期期中考班級(jí) 學(xué) 課程名稱 成績(jī) 一．填空題（每題1分，共10分C++源文件名的后綴是 編寫C++語言源程序并上機(jī)運(yùn)行的一般過程為編輯、編譯、和執(zhí)行。其中，編輯的件，的作用是將此目標(biāo)文件與被調(diào)用到的其他目標(biāo)文件在一起。如果A是已經(jīng)定義好的一個(gè)類，r2是A類的一個(gè)對(duì)象，p是指向A類對(duì)象的指針。執(zhí)pnewA(r2)時(shí)，系統(tǒng)會(huì)自動(dòng)調(diào)用拷貝構(gòu)造函數(shù)，執(zhí)行deletep系統(tǒng)會(huì)自動(dòng)調(diào)用析構(gòu)函數(shù)。5。類的私有成員只能通過它的成員函數(shù)以及來。無論哪種派生方法，基類中的私有成員既不許外部函數(shù)，也不許派生類中的成員函數(shù)。6。公有繼承時(shí)，基類的保護(hù)成員在派生類中是保護(hù)成員成員，基類中的公有成員在派生類中是公有成員成員。承諾人 二．看程序，寫結(jié)果（每題5分，共30分）1．寫出下列程序執(zhí)行結(jié)果【構(gòu)造函數(shù)和析構(gòu)函數(shù)的順序】 Point{ x,Point(inta=1,intb={x=a;y=cout<<"Point("<<x<<","<<y<<")"<<}~Point(){cout<<"Point["<<x<<","<<y<<"]"<<endl; Point { origin,*pp=newPoint(3,{Pointpoint1(-5,}Pointpoint2(1,2);deletepp;return}class{friendostream&operator<<(ostream&os,constCST&ob);CST(intv1=0){data=v1;++count;cout<<“constructing“<<data<<~CST(){ count--;cout<<“deconstructing“<<data<<endl;}operatorint()const{returndata;}staticintcount;intostream&operator<<(ostream&os,constCST&ob{os<<"data="<<os<<“,count=”<<ob.count<<endl;returnos;}ConstructingCST::count=ConstructingCST::count=Constructingdata=4,count=deconstructingCST::count=1Constructing10deconstructing10data=10,count=1deconstructingint{CSTcs,intcout<<"CST::count="<<CST::count<<ptr1=newcout<<deletecout<<"CST::count="<<CST::count<<ptr2=*ptr2=cout<<value=cout<<value<<return}}class{intx,y;coord(inti=0,intj=0){x=i;y=j;voidprint(){cout<<"x:"<<x<<",y:"<<y<<endl;}coordoperator++(){++x;return*this;}coordoperator++(intn){coordtmp=*this;++y;returnx:x:5,y:x:5,y:x:5,y:int{coord(ob++).print();print2（x=5,y=10ob.print();operator++(intny1，xx=5,y=11return}classcomplexintreal;//intimag;//complex(intr=0,inti=0){real=r;imag=complex(constcomplex&t){real=t.real+2;imag=t.imag+1;}voidshow(){cout<<real<<"+"<<imag<<"I";}};void{complex c2=cout<<c1= 賦值運(yùn)算，調(diào)用的是默認(rèn)的賦值函數(shù)，c2的成員變量值賦給c1。寫出下列程序的執(zhí)行結(jié)果classC_AC_A(charvalue=‘@’){data cout<<"Object"<<data<<"constructor" C_A(constC_A&obj){ obj.data+cout<<"Object"<<data<<"constructor"{cout<<"Object"<<data<<"destructor"<<endl;} ObjectaconstructorObject8constructorObject9constructorObjectmconstructorObjectmdestructorObject8destructorObjectbconstructorObjectObjectaconstructorObject8constructorObject9constructorObjectmconstructorObjectmdestructorObject8destructorObjectbconstructorObjectmconstructorObjectmdestructorObjectbdestructorObjectadestructorObject9destructor staticC_Af // Objectbconstructorintmain(){C_Areturn}classCBaseCBase(int{m_data=cout<<"ConstructorofCBase.m_data="<<m_data}virtual~CBase(){cout<<"DestructorofCBase.m_data="<<m_data<<endl;}virtualvoidprint(){cout<<"CBase::m_data="<<m_data<<endl;}intclassCDerived:public{CDerived(int

{cout<<"ConstructorofCDerived."<<endl;）~CDerived(){cout<<"DestructorofCDerived."voidprint(){cout<<"CDerived::m_data="<<m_data<<endl;}intint{CBase*p=newCDerived(67),baseObj=p-ConstructorofCBase.m_data=63ConstructorofCDerived.deletereturn}DestructorofDestructorofCBase.DestructorofCBase.二．程序填空（每空2分，共30分classA{ operator==(constA&a1constA&a2)//判兩數(shù)據(jù)成員指向的對(duì)象相{return *(a1.a)==*(a2.a) ;}A(intaa0a newint(aa) //aa初始化aA A&obj a=new *a= } delete }//釋放動(dòng)態(tài)空int*在如下Rational類的基礎(chǔ)上又定義了一個(gè)Complex類。復(fù)數(shù)類具有輸入輸出和加能。classRationalfriendistream&operator>>(istream&in,Rational&obj);//friendostream&operator<<(ostream&os,constRational&obj);//輸出重載函數(shù)friendRationaloperator+(constRational&r1,constRational&r2運(yùn)算符重載friendRationaloperator*(constRational&r1,constRational&r2);//*運(yùn)算符重載intnum;intden;void Rational(intn0,intd1)numn;dend;ReductFraction();}operatordouble //double型{ (double(num)/den);classfriendComplexoperator+(constComplex&x,constComplex&y)；friendistream&operator>>(istream&is, Complex&obj friendostream&operator<<(ostream&os,constComplex&obj);Rationalreal; Rational Complex(intr1=0,intr2=1,inti1=0,inti2= real(r0,r1),imag(i1, Complexoperator+(constComplex&x,constComplex{Complextmp.real=x.real+ tmp.imag=x.imag+y.imag }三。編程（每題10分，共30分int //輸出：10 //輸出：21 //輸出：為1號(hào)服務(wù) //輸出：30 //3return} 4構(gòu)造函 2Come函 2Go函 2classintco{covoid{co}void{if(com-goNum==0) } void{Aa1(3,15),a2(2,5),a3,a3=a1+a2;a4=a1-a2;cout<<a3;cout<<a4}