程序設計與算法語言

本文格式為Word版，下載可任意編輯——程序設計與算法語言

一、選擇題

1-5CDBBC6-10DBBAA

11-12AC注意：第11小題可以不做，教材未講虛基類的內容13BC14-16ADC

注明第14小題：C++中運算符“.〞,“::〞,“sizeof()〞，“?:〞，“.*〞不能重載

二、程序填空題

1.intsum()x=a2.base::fun()3.x[i]+a.x[i]t

4.virtual

*pa

三、分析程序輸出結果

1.constructingA!

constructingA!destructingA!destructingA!2.c1:1

第1次調用拷貝構造函數！c2:1

第2次調用拷貝構造函數！c3:2

第3次調用拷貝構造函數！c4:153.2

214.ABC

5.base::display1()

derived::display2()

四、編寫程序

1.

#includeclasssquare{

private:floatradius;public:square(floatd=0)

y=b

x[i]+a.x[i]

pa=}floatperimeter(){return4*radius;}};

voidmain()

{squarep(4);coutclassbuilding{

private:floatlength,broadth;intstory;public:building(floata,floatb,intc){length=a;broadth=b;story=c;}floatarea(){returnlength*broadth*story;}};

voidmain()

{buildingp(30,40,10);coutclasscube{

private:floatx;public:cube(floatd=0){x=d;}floatarea(){return6*x*x;}floatv()

{returnx*x*x;}};

voidmain(){floata;cin>>a;cubep(a);coutclasspoint{

private:floatx,y,z;public:point(floata,floatb,floatc){x=a;y=b;z=c;}point(){}voidprint(){coutclassPerson{

protected:charname[20];intage;public:voidinput(){cout>name;cout>age;}voiddisp(){cout>cla;cout>num;}voiddisp(){Person::disp();cout>gh;cin>>gl;}voiddisp(){Person::disp();cout#includeclassCircle{

public:virtualvoidarea()=0;virtualvoidlength()=0;};

classincirlce:publicCirc