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页数:6页
时间:2019-06-18
《自考C++程序结果及答案》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、1.给出下面程序输出结果。#includeclassa{public:virtualvoidprint(){cout<<"aprog..."<2、.[解析]考查多态性的。a类对象调用本身的虚函数,b类因为没有覆写print,所以仍然调用基类的虚函数。而c类重新定义print虚函数,所以调用c类的print。2.给出下面程序输出结果。#include#include#includeboolfun(longn);voidmain(){longa=10,b=30,l=0;if(a%2==0)a++;for(longm=a;m<=b;m+=2)if(fun(m)){if(l++%10==0)cout<3、tw(5)<classTest{intx,y;public:Test(inti,intj=0){x=i;y=j;}intget(inti,intj){returni+j4、;}};voidmain(){Testt1(2),t2(4,6);int(Test::*p)(int,int=10);p=Test::get;cout<<(t1.*p)(5)<*p)(7,20)<#include5、.h>#includeclassstudent{charname[8];intdeg;charlevel[7];friendclassprocess;//说明友元类public:student(charna[],intd){strcpy(name,na);deg=d;}};classprocess{public:voidtrans(student&s){inti=s.deg/10;switch(i){case9:strcpy(s.level,"优");break;case8:strcpy(s.level,"良");b6、reak;case7:strcpy(s.level,"中");break;case6:strcpy(s.level,"及格");break;default:strcpy(s.level,"不及格");}}voidshow(student&s){cout<7、孙六",88)};processp;cout<<"结果:"<<"姓名"<classexample{inta;public:example(intb=5){a=b++;}voidprint(){a=a+1;cout<8、print()const{cout<
2、.[解析]考查多态性的。a类对象调用本身的虚函数,b类因为没有覆写print,所以仍然调用基类的虚函数。而c类重新定义print虚函数,所以调用c类的print。2.给出下面程序输出结果。#include#include#includeboolfun(longn);voidmain(){longa=10,b=30,l=0;if(a%2==0)a++;for(longm=a;m<=b;m+=2)if(fun(m)){if(l++%10==0)cout<3、tw(5)<classTest{intx,y;public:Test(inti,intj=0){x=i;y=j;}intget(inti,intj){returni+j4、;}};voidmain(){Testt1(2),t2(4,6);int(Test::*p)(int,int=10);p=Test::get;cout<<(t1.*p)(5)<*p)(7,20)<#include5、.h>#includeclassstudent{charname[8];intdeg;charlevel[7];friendclassprocess;//说明友元类public:student(charna[],intd){strcpy(name,na);deg=d;}};classprocess{public:voidtrans(student&s){inti=s.deg/10;switch(i){case9:strcpy(s.level,"优");break;case8:strcpy(s.level,"良");b6、reak;case7:strcpy(s.level,"中");break;case6:strcpy(s.level,"及格");break;default:strcpy(s.level,"不及格");}}voidshow(student&s){cout<7、孙六",88)};processp;cout<<"结果:"<<"姓名"<classexample{inta;public:example(intb=5){a=b++;}voidprint(){a=a+1;cout<8、print()const{cout<
3、tw(5)<classTest{intx,y;public:Test(inti,intj=0){x=i;y=j;}intget(inti,intj){returni+j
4、;}};voidmain(){Testt1(2),t2(4,6);int(Test::*p)(int,int=10);p=Test::get;cout<<(t1.*p)(5)<*p)(7,20)<#include5、.h>#includeclassstudent{charname[8];intdeg;charlevel[7];friendclassprocess;//说明友元类public:student(charna[],intd){strcpy(name,na);deg=d;}};classprocess{public:voidtrans(student&s){inti=s.deg/10;switch(i){case9:strcpy(s.level,"优");break;case8:strcpy(s.level,"良");b6、reak;case7:strcpy(s.level,"中");break;case6:strcpy(s.level,"及格");break;default:strcpy(s.level,"不及格");}}voidshow(student&s){cout<7、孙六",88)};processp;cout<<"结果:"<<"姓名"<classexample{inta;public:example(intb=5){a=b++;}voidprint(){a=a+1;cout<8、print()const{cout<
5、.h>#includeclassstudent{charname[8];intdeg;charlevel[7];friendclassprocess;//说明友元类public:student(charna[],intd){strcpy(name,na);deg=d;}};classprocess{public:voidtrans(student&s){inti=s.deg/10;switch(i){case9:strcpy(s.level,"优");break;case8:strcpy(s.level,"良");b
6、reak;case7:strcpy(s.level,"中");break;case6:strcpy(s.level,"及格");break;default:strcpy(s.level,"不及格");}}voidshow(student&s){cout<7、孙六",88)};processp;cout<<"结果:"<<"姓名"<classexample{inta;public:example(intb=5){a=b++;}voidprint(){a=a+1;cout<8、print()const{cout<
7、孙六",88)};processp;cout<<"结果:"<<"姓名"<classexample{inta;public:example(intb=5){a=b++;}voidprint(){a=a+1;cout<8、print()const{cout<
8、print()const{cout<
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