-- 作者:yueying335
-- 发布时间:5/27/2008 9:14:00 AM
-- 求救!
某一书类的层次结构如下,请将空白处填以适当的C++语言成分。 #include<iostream.h > #include<string.h> class Book{ char bookname[24]; //书名 char author[20]; //著者 public: Book(char*p=””,char*q=””) {strcpy(bookname,p);strcpy(author,q);} ① { strcpy(bookname, x. bookname) ;strcpy(author,x.author);} void print(); }; class Series::public Book{ char sername[ 24] //系列名 int volume; //卷数 public : Series(char*p=””,char*q=””,char*sn=””,int v=0) ② : Series(book x,char sn=””,intv=0) 3 void print(); }; void Book::print() { Cout<<”书名:”<<bookname<<endl; cout<<”著者:”<<author<<endl; } void Series:: print( ) { Book::print( ) Cout<<”系列名:”<<sername<<”弟”<<colume<<”卷\n”; } 应用程序: #include”series.hpp” void main(void) { Book a(“现代日语听力教程”,”张基温”); 4 Series b b.print(); } 5.1.4有如下表示国家(Country) 中东地区(Middle East) 海湾(GULF)国家的类层次结构.在空白处填上适当的C++成分。 #include<iostream.h> #include<string.h> class Country{ ① char name [ 20];//国名 char capital[ 20〕;//首都 public: Country (char *n,char* cap); void print(); }; 2 { //中东地区 char people[20];//民族 int percent;//百分比 public: MiddleEast(char * n,char *cap *pp,int pr); void print(); }; 3 {海湾国家 int oil; //原油产量 public: Gulf (char * n=””,char * cap=””, Char*pp=””,int pr=0,int ol=0); void print(); }; Country::Country(char * n=””,char * cap=””) { strcpy( name,n);strcpy( capital,cap);} void Country::print() { Cout<<”国名;”<<name<<”,首都:”<<capital<<endl; } MiddleEast::MiddleEast(char *n=””,char * cap=””,char *pp=””,int pr=0) 4 : Void MiddleEast::print( ) { Cout<<”国家:”<<name<<”,首都:”<<capital<<end1; Cout<<”民族;”<<people<<””<<percent<<”%\n”; } Gulf ::Gulf(char * n=””,char * cap=””,char * pp=””,int pr=0,int ol=0) 5 : Void Gulf ::print( ) { Cout<<”国名:”<<name<<”,首都:”<<capital<<end1; Cout<<”民族:”<<people<<””<<percent<<”%\n”; Cout<<”原油生产量:”<<oil<<”万桶\n”; 5.1.5对于类结构 Class student { Public: int studentId; float gpa; char college[20]; char name[20]; enum{fresh,soph,junior,senior,grad}year; char major[20]; void print( ); }; Class GradStudent:student{ Public: enum{ta,a,fellowship,other}support; Char dept[15]; Char thesis[90]; Void print( ); }; 下面的代码中有什么错误? //… Main( ) { GradStudent s; Strcpy(s.name,”zhang3”); …
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