C++第六次作业培训资料.doc

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1、一、【3.14】1、题目：以下程序的运行结果是（B.7,8）#includeusingnamespacestd;classB{public:B(){}B(inti,intj){x=i;y=j;}voidprintb(){cout<

2、();return0;}1、运行结果：【3.15】1、题目：以下程序的运行结果是（A.24）#includeusingnamespacestd;classA{public:voidset(inti,intj){x=i;y=j;}intget_y(){returny;}private:intx,y;};classbox{public:voidset(intl,intw,ints,intp){length=l;width=w;label.set(s,p);}intget_area(){returnlength*width;}private:intlength,width

3、;Alabel;};intmain(){boxb;b.set(4,6,1,20);cout<usingnamespacestd;classSample{public:Sample(inti,intj){x=i;y=j;}voiddisp(){cout<<"displ"<

4、amplea(1,2);a.disp();return0;}2、运行结果。【3.17】1、题目：以下程序的运行结果是（B.56,88）#includeusingnamespacestd;classR{public:R(intr1,intr2){R1=r1;R2=r2;}voidprint();voidprint()const;private:intR1,R2;};voidR::print(){cout<

5、constRb(56,88);b.print();return0;}2、运行结果。【3.18】1、题目：写出下面程序的运行结果。#includeusingnamespacestd;classtoy{public:toy(intq,intp){quan=q;price=p;}intget_quan(){returnquan;}intget_price(){returnprice;}private:intquan,price;};intmain(){toyop[3][2]={toy(10,20),toy(30,48),toy(50,68),toy(70,80),toy(

6、90,16),toy(11,120),};for(inti=0;i<3;i++){cout<usingnamespacestd;classexample{public:example(intn){i=n;co

7、ut<<"Constructing";}~example(){cout<<"Destructing";}intget_i(){returni;}private:inti;};intsqr_it(exampleo){returno.get_i()*o.get_i();}intmain(){examplex(10);cout<