C++primer plus第六版课后编程题答案14.5

emp.cpp

#include <iostream>#include <string>using namespace std;static void eatLine(){while(cin.get()!='\n')continue;};class emp{private:string fname;string lname;string job;public:emp(){fname="fdefault";lname="ldefault";job="jdefault";}emp(const string &fn,const string &ln,const string &j){fname=fn;lname=ln;job=j;}virtual void speciality()const=0{cout<<"this is emp:"<<endl;}virtual void showAll()const{speciality();//用于区分cout<<"fullname:"<<fname<<"     lastname:"<<lname<<endl;}virtual void setAll(){speciality();cout<<"Please enter the fullname:"<<endl;string ffname;getline(cin,ffname);eatLine();cout<<"Please enter the lastname:"<<endl;string llname;getline(cin,llname);eatLine();}friend ostream&operator<<(ostream &os,const emp &e){e.showAll();//调用成员函数搞定return os;}virtual ~emp(){}};class employee:public emp{public:employee(){};employee(const string &fn,const string &ln,const string &j):emp(fn,ln,j){};virtual void speciality()const{cout<<"this is employee:"<<endl;}virtual void setAll(){emp::setAll();}virtual void showAll()const{//speciality();//这里无需调用，因为上一层已经调用过emp::showAll();}};class manager:virtual public emp{private:int inchargeof;protected:int InChargeOf()const{return inchargeof;};int &InChargeOf(){return inchargeof;};public:manager(){};manager(const string &fn,const string &ln,const string &j,int c=0):emp(fn,ln,j),inchargeof(c){};manager(const emp &e,int ico):emp(e),inchargeof(ico){};manager(const manager &m):emp(m){inchargeof=m.inchargeof;}virtual void speciality()const{cout<<"This is manager:"<<endl;}virtual void showAll()const{emp::showAll();cout<<"inchargeof:"<<inchargeof<<endl;};virtual void setAll(){emp::setAll();cout<<"Enter the inchargeof:";//int n;cin>>inchargeof;eatLine();}};class fink:virtual public emp{private:string reportsto;protected:const string ReportsTo()const {return reportsto;};string &ReportsTo(){return reportsto;};public:fink(){};fink(const string &fn,const string &ln,const string &j,const string &rpo):emp(fn,ln,j),reportsto(rpo){}fink(const emp &e,const string &rpo):emp(e),reportsto(rpo){}fink(const fink &e):emp(e){reportsto=e.reportsto;}virtual void speciality()const{cout<<"this is fink:"<<endl;}virtual void showAll()const{emp::showAll();cout<<"Reportsto:"<<reportsto<<endl;}virtual void setAll(){emp::setAll();cout<<"Enter the reportsto:";//int n;getline(cin,reportsto);eatLine();eatLine();}};class highfink:public manager,public fink{public:highfink(){};highfink(const string &fn,const string &ln,const string &j,const string &rpo,int ico):emp(fn,ln,j),manager(fn,ln,j,ico),fink(fn,ln,j,rpo){}highfink(const emp &e,const string &rpo,int ico):emp(e),manager(e,ico),fink(e,rpo){}//注意这个构造是怎么构造的highfink(const fink &f,int ico):emp(f),fink(f),manager(f,ico){}//这样行不行呢？highfink(const manager &m,const string &rpo):emp(m),manager(m),fink(m,rpo){}highfink(const highfink &h):emp(h),manager(h),fink(h){}//这样可否？？virtual void speciality()const//const必须与emp一致，否则会隐藏原来的,而不是重载{cout<<"This is highfink:"<<endl;}virtual void showAll()const//注意大小写不要写错了{//out<<"here is !"<<endl;emp::showAll();manager::showAll();fink::showAll();}virtual void setAll(){manager::setAll();fink::setAll();}};

main145.cpp

#include <iostream>#include "emp.cpp"using namespace std;void main145(){/*employee em("Trip","Harris","Thumper");cout<<em<<endl;em.showAll();manager ma("Amorphia","Spindragon","Nuancer",5);//cout<<ma<<endl;//ma.showAll();fink fi("Matt","Oggs","Olier","Juno Barr");//cout<<fi<<endl;//fi.showAll();//highfink hf(ma,"Curly kew");highfink hf(fi,50);hf.showAll();//这个似乎有点问题//直接跳到了manager那里的showAll()，什么情况？//原来是我的show大小没注意//格式你们自己搞*/cout<<"Press a key for next phase:"<<endl;cin.get();//懒得写了，吃饭去highfink hf2;hf2.setAll();cout<<"Using an emp *point to it :"<<endl;hf2.showAll();cin.get();}

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第17章有道题要用这个，于是回去发现了bug所在，新的在这里

ee.cpp

#include <iostream>#include <string>#include <fstream>using namespace std;static enum{Emp,Employee,Manager,Fink,Highfink};//不能写成小写的emp，否则在main175中无法创建对应的对象static void eatLine(){while(cin.get()!='\n')continue;};class emp{private:string fname;string lname;string job;public:emp(){fname="fdefault";lname="ldefault";job="jdefault";}emp(const string &fn,const string &ln,const string &j){fname=fn;lname=ln;job=j;}virtual void Data(ofstream &fout){//标记fout<<Emp<<endl;};virtual void save(ofstream &fout){Data(fout);fout<<fname<<endl;fout<<lname<<endl;fout<<job<<endl;};//保存到文本//读取文本virtual void getall(ifstream &fin){fin>>fname>>lname>>job;}virtual void speciality()const=0{cout<<"this is emp:"<<endl;}virtual void showAll()const{speciality();//用于区分cout<<"fullname:"<<fname<<"     lastname:"<<lname<<"  job:"<<job<<endl;}virtual void setAll(){//eatLine();//清除前面的输入speciality();cout<<"\nPlease enter the fullname:";//string ffname;//应该直接赋值给fname//getline(cin,fname);//eatLine();cin>>fname;cout<<"\nPlease enter the lastname:";//string llname;//getline(cin,lname);cin>>lname;cout<<"\nPlease enter the job:";//string llname;//getline(cin,job);cin>>job;//eatLine();}friend ostream&operator<<(ostream &os,const emp &e){e.showAll();//调用成员函数搞定return os;}virtual ~emp(){}};class employee:public emp{public:employee(){};employee(const string &fn,const string &ln,const string &j):emp(fn,ln,j){};virtual void speciality()const{cout<<"this is employee:"<<endl;}virtual void setAll(){emp::setAll();}virtual void showAll()const{//speciality();//这里无需调用，因为上一层已经调用过emp::showAll();}virtual void Data(ofstream &fout){//标记fout<<Employee<<endl;};virtual void save(ofstream &fout){emp::save(fout);//没有新元素};//保存到文本virtual void getall(ifstream &fin){emp::getall(fin);//fin>>fname>>lname>>job;}};class manager:virtual public emp{private:int inchargeof;protected:int InChargeOf()const{return inchargeof;};int &InChargeOf(){return inchargeof;};void setI(int i)//设置inchargeof{inchargeof=i;}public:manager(){};manager(const string &fn,const string &ln,const string &j,int c=0):emp(fn,ln,j),inchargeof(c){};manager(const emp &e,int ico):emp(e),inchargeof(ico){};manager(const manager &m):emp(m){inchargeof=m.inchargeof;}virtual void speciality()const{cout<<"This is manager:"<<endl;}virtual void showAll()const{emp::showAll();cout<<"inchargeof:"<<inchargeof<<endl;};virtual void setAll(){emp::setAll();cout<<"Enter the inchargeof:";//int n;cin>>inchargeof;eatLine();}virtual void Data(ofstream &fout){//标记fout<<Manager<<endl;};virtual void save(ofstream &fout){emp::save(fout);fout<<inchargeof<<endl;};//保存到文本virtual void getall(ifstream &fin){emp::getall(fin);fin>>inchargeof;//fin>>fname>>lname>>job;}};class fink:virtual public emp{private:string reportsto;protected:const string ReportsTo()const {return reportsto;};string &ReportsTo(){return reportsto;};void setRe(string str){reportsto=str;}public:fink(){};fink(const string &fn,const string &ln,const string &j,const string &rpo):emp(fn,ln,j),reportsto(rpo){}fink(const emp &e,const string &rpo):emp(e),reportsto(rpo){}fink(const fink &e):emp(e){reportsto=e.reportsto;}virtual void speciality()const{cout<<"this is fink:"<<endl;}virtual void showAll()const{emp::showAll();cout<<"Reportsto:"<<reportsto<<endl;}virtual void setAll(){emp::setAll();cout<<"Enter the reportsto:";//int n;//getline(cin,reportsto);cin>>reportsto;eatLine();//eatLine();}virtual void Data(ofstream &fout){//标记fout<<Fink<<endl;};virtual void save(ofstream &fout){emp::save(fout);fout<<reportsto<<endl;};//保存到文本virtual void getall(ifstream &fin){emp::getall(fin);fin>>reportsto;}};class highfink:public manager,public fink{public:highfink(){};highfink(const string &fn,const string &ln,const string &j,const string &rpo,int ico):emp(fn,ln,j),manager(fn,ln,j,ico),fink(fn,ln,j,rpo){}highfink(const emp &e,const string &rpo,int ico):emp(e),manager(e,ico),fink(e,rpo){}//注意这个构造是怎么构造的highfink(const fink &f,int ico):emp(f),fink(f),manager(f,ico){}//这样行不行呢？highfink(const manager &m,const string &rpo):emp(m),manager(m),fink(m,rpo){}highfink(const highfink &h):emp(h),manager(h),fink(h){}//这样可否？？virtual void speciality()const//const必须与emp一致，否则会隐藏原来的,而不是重载{cout<<"This is highfink:"<<endl;}virtual void showAll()const//注意大小写不要写错了{//out<<"here is !"<<endl;emp::showAll();cout<<"Inchargeof:"<<InChargeOf()<<"   ";cout<<"Reportsto:"<<ReportsTo()<<endl;/*manager::showAll();fink::showAll();*/}virtual void setAll(){emp::setAll();cout<<"Enter the inchargeof:";int incharge;cin>>incharge;cin.get();//吃掉\nsetI(incharge);cout<<"Enter the reportsto:";string res;cin>>res;setRe(res);/*manager::setAll();fink::setAll();*/}virtual void getall(ifstream &fin){emp::getall(fin);}virtual void Data(ofstream &fout){//标记fout<<Highfink<<endl;};virtual void save(ofstream &fout){//要特殊处理emp::save(fout);//Data(fout);int n=InChargeOf();fout<<n<<endl;string str=ReportsTo();fout<<str<<endl;};//保存到文本};