C++ Primer Plus: 第10章(2)

第10章编程题：
（1）
Account.h:

#ifndef ACCOUNT_H_
#define ACCOUNT_H_#include <string>class Account
{
private:std::string name ;std::string code ;double money ;
public:Account() ;Account(std::string Name, std::string Code, double Money) ;~Account() ;void ShowAccout() ;void InputMoney(double Money) ;void OutputMoney(double Money) ;
} ;#endif

Account.cpp:

#include "Account.h"
#include <iostream>
#include <string>
using namespace std ;Account::Account()
{}Account::Account(string Name, string Code, double Money)
{name = Name ;code = Code ;money = Money ;
}Account::~Account()
{}void Account::ShowAccout()
{using std::ios_base ;ios_base::fmtflags orig = cout.setf(ios_base::fixed, ios_base::floatfield) ;std::streamsize prec = cout.precision(0) ;cout << "This customer, who is called " << name << ", and has $" << money << " in " << code << " Account.\n";cout.setf(orig, ios_base::floatfield) ;cout.precision(prec) ;
}void Account::InputMoney(double Money)
{money += Money ;
}void Account::OutputMoney(double Money)
{money -= Money ;
}

main.cpp:

#include "Account.h"
#include <iostream>const int Num = 8 ;int main()
{Account A[Num] = {Account("Jackie Chen", "098425345", 56943),Account("John Rebort", "*&%$#4586", 12366), Account("Bluse Amy", "3425834", 9032455),Account("Killy Joe", "@#%^&*890", 234568690),Account("Beyonce Jim", "*&^%$#678", 999912366),Account("Alan London", "5555555", 222222222222),Account("Jackie Chen", "098425345", 56943),Account("Floyd Dork", "4324049", 247)} ;std::cout << "Let's see everyone: \n" ;for (int i=0; i<Num; i++){A[i].ShowAccout() ;}std::cout << "\nNow everyone increases $100: \n" ;for (int i=0; i<Num; i++){A[i].InputMoney(100) ;}for (int i=0; i<Num; i++){A[i].ShowAccout() ;}std::cout << "\nNow everyone decreases $100: \n" ;for (int i=0; i<Num; i++){A[i].OutputMoney(100) ;}for (int i=0; i<Num; i++){A[i].ShowAccout() ;}
}

(2)
Person.h:

#ifndef PERSON_H_
#define PERSON_H_#include <string>
using namespace std ;class Person
{
private:static const int LIMIT = 25 ;string lname ;char fname[LIMIT] ;
public:Person() {lname = "" ; fname[0] = '\0' ;} ;Person(const string & ln, const char * fn = "Heyyou") ;void Show() const ;void FormalShow() const ; 
} ;#endif

Person.cpp:

#include "Person.h"
#include <iostream>
#include <cstring>
using namespace std ;Person::Person(const string & ln, const char * fn)
{lname = ln ;strcpy(fname, fn) ;
}void Person::Show() const
{cout << fname << " " << lname ;
}void Person::FormalShow() const 
{cout << lname << ", " << fname ;
}

main.cpp:

#include "Person.h"
#include <iostream>int main()
{Person one ;Person two("Smythecraft") ;Person three("Dimwiddy", "Sam") ;std::cout << "The name of one:\n" ;one.Show() ;std::cout << std::endl ;one.FormalShow() ;std::cout << "\nThe name of two:\n" ;two.Show() ;std::cout << std::endl ;two.FormalShow() ;std::cout << "\nThe name of three:\n" ;three.Show() ;std::cout << std::endl ;three.FormalShow() ;std::cout << std::endl ;
}

(3)
golf.h:

#ifndef GOLF_H_
#define GOLF_H_class golf
{
private:static const int Len = 40 ;char fullname[Len] ;int handicap ;
public:golf(const char * name = "", int hc = 0) ;~golf() ;int setgolf() ;void Handicap() ;void showgolf() const ;
} ;#endif

golf.cpp:

#include "golf.h"
#include <cstring>
#include <iostream>golf::golf(const char * name, int hc)
{strncpy(fullname, name, Len) ;handicap = hc ;
}golf::~golf()
{std::cout << "delete!\n" ;
}int golf::setgolf()
{using namespace std ;char name[Len] = {0} ;int hc ;cout << "Fullname: " ;if (cin.get(name, Len).get() == -1){cin.clear() ;        // 务必对输入队列进行重置cout << "Enter Fail!\n" ;return 0 ;}cout << "Handicap: " ;while(!(cin >> hc)){cin.clear() ;while(cin.get() != '\n') ;cout << "Please enter a number: " ;}cin.get() ;golf G(name, hc) ;*this = G ;return 1 ;
}void golf::Handicap()
{int hc ;std::cin >> hc ;(*this).handicap = hc ;
}void golf::showgolf() const
{std::cout << "The " << handicap << " player is "<< fullname << std::endl ;
}

main.cpp:

#include "golf.h"
#include <iostream>const int Num = 5 ;int main()
{using namespace std ;golf G[Num] ;int num = 0 ;cout << "Please input the information of all of players:\n" ;for (int i=0; i<Num; i++){cout << "#" << i+1 << ": \n" ;if(!G[i].setgolf()) break ;else num ++ ;}cout << "\nNow change everyone's handicap:\n" ;for (int i=0; i<num; i++){cout << "#" << i+1 << ": " ;G[i].Handicap() ; }cout << "\nAnd then display all players:\n" ;for (int i=0; i<num; i++){G[i].showgolf() ;}
}

(4)
Sales.h:

#ifndef SALES_H_
#define SALES_H_namespace SALES
{class Sales{private:static const int QUARTERS = 4 ;double sales[QUARTERS] ;double average ;double max ;double min ;public:Sales() ;Sales(const double ar[], int n) ;~Sales() ;void setSales() ;void ShowSales() const ;} ;
} #endif

Sales.cpp:

#include "Sales.h"
#include <iostream>
using namespace SALES ;Sales::Sales()
{min = max = average = 0 ;for (int i=0; i<QUARTERS; i++)sales[i] = 0 ;
}Sales::Sales(const double ar[], int n)
{int i ;for (i=0; i<n && i<QUARTERS; i++)sales[i] = ar[i] ;while (i<QUARTERS){sales[i] = 0 ;i ++ ;} min = max = sales[0] ;double total = 0 ;for (i=0; i<QUARTERS; i++){total += sales[i] ;if (min > sales[i]) min = sales[i] ;if (max < sales[i]) max = sales[i] ;}average = total / QUARTERS ;
}Sales::~Sales()
{std::cout << "delete!\n" ;
}void Sales::setSales()
{using namespace std ;int n ;cout << "Enter the number of double you want to input: " ;cin >> n ;double *ar = new double[n] ;cout << "Enter these numbers you want to input:\n" ;for (int i=0; i<n; i++){cin >> ar[i] ;}Sales S(ar, n) ;*this = S ;delete [] ar ;
}void Sales::ShowSales() const
{std::cout << "The members of Sales:\n" ;int i ;for (i=0; i<QUARTERS; i++){std::cout << sales[i] << " " ;}std::cout << std::endl ;std::cout << "max = " << max << std::endl ;std::cout << "min = " << min << std::endl ;std::cout << "average = " << average << std::endl ;
}

main.cpp:

#include "Sales.h"
#include <iostream>
using namespace SALES ;int main()
{using namespace std ;double ar[7] = {7, 6, 5, 4, 3, 2, 1} ;Sales S1(ar, 7) ;cout << "The content of S1:\n" ;S1.ShowSales() ;Sales S2 ;S2.setSales() ;cout << "The content of S2:\n" ;S2.ShowSales() ;
}

(5)
Stack.h:

#ifndef STACK_H_
#define STACK_H_struct customer {char fullname[35] ;double payment ;
} ;typedef customer Item ;class Stack
{
private:static const int MAX = 10 ;Item items[MAX] ;int top ;double total_payment ;
public:Stack() ;~Stack() ;bool isempty() const ;bool isfull() const ;bool push(const Item & e) ;bool pop(Item & e) ;
} ;#endif

Stack.cpp:

#include "Stack.h"
#include <cstring>
#include <iostream>Stack::Stack()
{top = -1 ;total_payment = 0 ;
}Stack::~Stack()
{std::cout << "Delete!\n" ;
}bool Stack::isempty() const
{if (top == -1) return true ;else return false ;
}bool Stack::isfull() const
{if (top == (MAX-1)) return true ;else return false ;
}bool Stack::push(const Item & e)
{if (top == (MAX-1)) return false ;top++ ;strcpy(items[top].fullname, e.fullname) ;items[top].payment = e.payment ;return true ;
}bool Stack::pop(Item & e)
{if (top == -1) return true ;strcpy(e.fullname, items[top].fullname) ;e.payment = items[top].payment ;top -- ;total_payment += e.payment ;std::cout << "total_payment = " << total_payment << std::endl ;return true ;
}

main.cpp:

#include "Stack.h"
#include <iostream>
#include <cctype>int main()
{using namespace std ;Stack St ;char ch ;Item item ;cout << "Please enter A to add a customer,\n" << "P to process a PO, or Q to quit.\n" ;while (cin>>ch && toupper(ch) != 'Q'){while (cin.get() != '\n')continue ;if (!isalpha(ch)){cout << '\a' ;continue ;}switch(ch){case 'A':case 'a': cout << "Enter a customer:\n" ;cout << "Fullname: " ;cin.get(item.fullname, 35).get() ;cout << "Payment: " ;cin >> item.payment ;if (!St.push(item))cout << "The Stack is full!\n" ;break ;case 'P':case 'p': cout << "Delete a customer:\n" ;if (!St.pop(item))cout << "The Stack is empty!\n" ;cout << "Fullname: " ;cout << item.fullname << endl ;cout << "Payment: " ;cout << item.payment << endl ;break ;}cout << "Please enter A to add a customer,\n"<< "P to process a PO, or Q to quit.\n" ;}cout << "Bye!\n" ;return 0 ;
}

(6)
Move.h:

#ifndef MOVE_H_
#define MOVE_H_class Move
{
private:double x ;double y ;
public:Move(double a = 0, double b = 0) ;~Move() ;void showmove() const ;Move add(const Move & m) const ;void reset(double a = 0, double b = 0) ;
} ;#endif

Move.cpp:

#include "Move.h"
#include <iostream>Move::Move(double a, double b)
{x = a ;y = b ;
}Move::~Move()
{std::cout << "Delete!\n" ;
}void Move::showmove() const
{std::cout << "In this object, x = " << x << ", "<< "y = " << y << std::endl ;
}Move Move::add(const Move & m) const
{Move M(m.x, m.y);return M ;
}void Move::reset(double a, double b) 
{x = a ;y = b ;
}

main.cpp:

#include "Move.h"int main()
{Move Begining ;Move Next(9, 8) ;Begining.showmove() ;Next.showmove() ;Move Destination = Begining.add(Next) ;Destination.showmove() ;
}

(7)
Plorg.h:

#ifndef PLORG_H_
#define PLORG_H_class Plorg
{
private:static const int MAX = 19 ;char fullname[MAX] ;int CI ;
public:Plorg(const char * name = "Plorga") ;~Plorg() ;void ResetCI(int ci) ;void ShowPlorg() const ;
} ;#endif

Plorg.cpp:

#include "Plorg.h"
#include <iostream>
#include <cstring>Plorg::Plorg(const char * name){strncpy(fullname, name, MAX) ;CI = 50 ;
}Plorg::~Plorg(){std::cout << "Delete!\n" ;
}void Plorg::ResetCI(int ci){CI = ci ;
}void Plorg::ShowPlorg() const
{std::cout << "The fullname: " << fullname << ", CI = " << CI << std::endl ;
}

main.cpp:

#include "Plorg.h"int main()
{Plorg P1("Jim Killy") ;Plorg P2("Jackie London") ;Plorg P3("Trump Jim") ;P1.ShowPlorg() ;P2.ShowPlorg() ;P3.ShowPlorg() ;P1.ResetCI(90) ;P2.ResetCI(80) ;P3.ResetCI(70) ;P1.ShowPlorg() ;P2.ShowPlorg() ;P3.ShowPlorg() ;
}

(8)
List.h:

#ifndef LIST_H_
#define LIST_H_typedef int Item ;
struct LinkList {Item ElemType ;LinkList * next ;
} ;class List
{
private:static const int MAX = 10 ;LinkList * head ;LinkList * rail ;LinkList * p ;int num ;
public:List() ;~List() ;bool Add(const Item & i) ;bool isEmpty() ;bool isFull() ;void visit(void (*pf)(Item & i)) ;
} ;#endif

List.cpp:

#include "List.h"
#include <iostream>List::List() {head = new LinkList ;head->next = NULL ;rail = p = head ;num = 0 ;
}List::~List() {while (head != rail) {p = head ;head = head -> next ;delete p ;}delete head ;head = rail = p = NULL ;num = 0 ;std::cout << "This List has been destroyed!\n" ;
}bool List::Add(const Item & i) {if (num == MAX) return false ;p = rail ;p->next = new LinkList ;p->next->ElemType = i ;p->next->next = NULL ;rail = p->next ;num++ ;return true ;
}bool List::isEmpty() {if (num == 0) return true ;else return false ;
}bool List::isFull() {if (num == MAX) return true ;else return false ;
}void List::visit(void (*pf)(Item & i)) {for (p = head->next; p; p=p->next)(*pf)(p->ElemType) ;
}

main.cpp:

#include "List.h"
#include <iostream>void Watch(Item & i) ;
void AddOne(Item & i) ;int main()
{using namespace std ;List L ;cout << "Let's input some numbers:\n" ;Item i ;while (cin>>i) {if (L.isFull()) {cout << "This List is filled!\n" ;break ;}else L.Add(i) ;}cout << "Let's see all of members from this List:\n" ;L.visit(Watch) ;cout << endl ;cout << "Let's add one to every member from this List:\n" ;L.visit(AddOne) ;L.visit(Watch) ;cout << endl ;
}void Watch(Item & i) {std::cout << i << " " ;
}void AddOne(Item & i) {i += 1 ;
}

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