C++PrimerPlus（第六版）第十章答案_c++ primer plus第六版第十章答案

第1题：

main.cpp

#include <iostream>
#include "stock.h"
 
using namespace std;
 
int main()
{
	BankAccount a1= BankAccount("a1", "fad@123", 123);
	BankAccount a2 = BankAccount("a2", "fad@456", 456);
	a1.show();
	a2.show();
	a1.deposit(20);
	a1.show();
	a1.withdraw(66);
	a1.show();
	return 0;
}

 stock.cpp

#include <iostream>
#include "stock.h"
 
using std::cout;
using std::endl;
BankAccount::BankAccount(const char* client, const char* num, double bal )
{
	strncpy(name,client,39);
	name[39] = '\0';
	strncpy(acctnum,num,24);
	acctnum[24] = '\0';
	balance = bal;
}
 
void BankAccount::show(void) const
{
	cout << "name:"<<name<<endl;
	cout << "anntnum:" << acctnum<<endl;
	cout << "balance:" << balance<<endl;
	cout << endl;
}
 
void BankAccount::deposit(double cash)
{
	balance += cash;
}
 
void BankAccount::withdraw(double cash)
{
	balance -= cash;
}

stock.h

#pragma warning (disable:4996)
#include <cstring>
 
class BankAccount
{
private:
	char name[40];
	char acctnum[25];
	double balance;
public:
	BankAccount(const char* client,const char*num,double bal=0.0);
	void show(void)const;
	void deposit(double cash);
	void withdraw(double cash);
};
 

第2题：

main.cpp

#include <iostream>
#include "stock.h"
 
using namespace std;
 
int main()
{
	Person one;
	Person two("Smythecraft");
	Person three("Dimwiddy","Sam");
	two.Show();
	cout << endl;
	two.FormalShow();
	return 0;
}

stock.cpp

#include <iostream>
#include "stock.h"
 
using std::cout;
using std::endl;
using std::string;
 
Person::Person(const string& ln, const char* fn)
{
	lname = ln;
	strncpy(fname,fn,24);
	fname[24] = '\0';
}
void Person::Show() const
{
	cout << "first name:" << fname<<"\n";
	cout << "last name:" << lname << "\n";
	cout << endl;
}
void Person::FormalShow() const
{
	cout << "last name:" << lname << "\n";
	cout << "first name:" << fname << "\n";
	cout << endl;
}

stock.h

#pragma warning (disable:4996)
#include <cstring>
using std::string;
 
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;
};

第3题:

main.cpp

#include <iostream>
#include "stock.h"
 
int main()
{
	using namespace std;
	golf in[5];
 
	for (int i = 0; i < 5; i++)
	{
		char name[Len];
		int hc;
		int result = 1;
		if (i % 2 == 0)
		{
			cout << "此为模式2：\n";
			result = in[i].setgolf();
		}
		else
		{
			cout << "此为模式1：\n请输入姓名：";
			cin.get(name, Len);
			cin.clear();
			cin.ignore((numeric_limits<std::streamsize>::max)(), '\n');
			cout << "请输入hc:";
			cin >> hc;
			cin.get();
			in[i].setgolf(name, hc);
			if (strcmp(name, " ") == 0)
			{
				result = 0;
			}
		}
		if (result == 0)
		{
			break;
		}
		if (i == 3)
		{
			in[i].handicap(7);
		}
		in[i].showgolf();
	}
	return 0;
}
//adadadasdadadadasdadadadasdadadadasdadadadasdadadadasdadadadasdadadadasdadadadasdadadadasd

stock.cpp

#pragma warning (disable :4996)
#include <iostream>
#include "stock.h"
#include <string>
 
using namespace std;
 
golf::golf(const char* name, int hc)
{
	strcpy(m_fullname, name);
	m_fullname[39] = '\0';
	m_handicap = hc;
}
 
golf::golf()
{
	strcpy(m_fullname, " ");
	m_handicap = -1;
}
 
void golf::setgolf(const char* name, int hc)
{
	strcpy(m_fullname, name);
	m_fullname[39] = '\0';
	m_handicap = hc;
}
 
int golf::setgolf()
{
	char name[Len];
	int hc;
	cout << "请输入姓名:";
	cin.get(name, Len);
	cin.clear();
	cin.ignore((numeric_limits<std::streamsize>::max)(), '\n');
	cout << "请输入hc：";
	cin >> hc;
	cin.get();
	if (strcmp(name, " ") == 0)
	{
		return 0;
	}
	else
	{
		*this = golf(name, hc);
		return 1;
	}
}
 
void golf::handicap(int hc)
{
	m_handicap = hc;
}
 
void golf::showgolf() const
{
	cout << "name:" << m_fullname << "\t";
	cout << "handicap:" << m_handicap << endl;
}

stock.h

#pragma warning (disable :4996)
#include <string>
const int Len = 40;
 
class golf
{
private:
	char m_fullname[Len];
	int m_handicap;
public:
	golf(const char* name, int hc);
	golf();
	int setgolf();
	void setgolf(const char* name, int hc);
	void handicap(int hc);
	void showgolf() const;
};

第4题：

main.cpp

 
#include"stock.h"
using namespace std;
using namespace SALES;
int main()
{
	Sales s1, s2;
	double ar1[2] = { 462.3,580.66 };
	s1.setSales(ar1, 2);
	s2.setSales();
	cout << "s1:" << endl;
	s1.showSales();
	cout << "s2:" << endl;
	s2.showSales();
	return 0;
}
 

stock.cpp

#include "stock.h"
namespace SALES
{
	Sales::Sales()
	{
		for (int i=0;i< QUARTERS;i++)
		{
			sales[i] = 0.0;
		}
		m_min = 0.0;
		m_max = 0.0;
		m_average = 0.0;
	}
	Sales::Sales(const double ar[], int n)
	{
		double min, max, aver;
		min = ar[0];
		max = ar[0];
		aver = 0.0;
		int i;
		for (i = 0; i < n; i++)
		{
			sales[i] = ar[i];
			if (min > ar[i])
			{
				min = ar[i];
			}
			if (max < ar[i])
			{
				max = ar[i];
			}
			aver += ar[i];
		}
		while (i < QUARTERS)
		{
			sales[i] = 0.0;
			i++;
		}
		aver /= n;
		m_min = min;
		m_max = max;
		m_average = aver;
	}
 
	void Sales::setSales()
	{
		std::cout << "请输入s的值：";
		double min;
		double max;
		double aver;
		double ar[4];
		for (int i = 0; i < 4; i++)
		{
			std::cin >> ar[i];
		}
		*this = Sales(ar, 4);
	}
 
	void Sales::setSales(const double ar[], int n)
	{
		*this = Sales(ar,n);
	}
 
	void Sales::showSales()const
	{
		using namespace std;
		cout << "sales:" << endl;
		for (int i = 0; i < 4; i++)
			cout << sales[i] << "\t";
		cout << endl;
		cout << left << setw(20) << "average:" << m_average << endl;
		cout << left << setw(20) << "max:" << setw(20) << m_max << endl;
		cout << left << setw(20) << "min:" << setw(20) << m_min << endl;
	}
}

stock.h

#pragma warning (disable:4996)
#include <iostream>
#include <string>
#include <new>
#include<iomanip>
namespace SALES
{ 
	class Sales
	{
	private:
		static const int QUARTERS = 4;
		double sales[QUARTERS];
		double m_average;
		double m_max;
		double m_min;
	public:
		Sales(const double ar[], int n);
		Sales();
		void setSales(const double ar[], int n);
		void setSales();
		void showSales()const;
	};
}

第5题：

main.cpp

#include <iostream>
#include "stock.h"
 
using namespace std;
 
int main()
{
	int total=0;
	Stack S;
	customer temp = {"name1",10};
	S.push(temp);
	temp = { "name2",456 };
	S.push(temp);
	S.pop(temp);
	total += temp.payment;
	cout << temp.fullname << "\t" << total << endl;
	S.pop(temp);
	total += temp.payment;
	cout << temp.fullname<<"\t"<<total<<endl;
	return 0;
}

stock.cpp

#include <iostream>
#include "stock.h"
 
using std::cout;
using std::endl;
 
Stack::Stack()
{
	top = 0;
}
 
bool Stack::isempty() const
{
	return top == 0;
}
 
bool Stack::isfull() const
{
	return top == MAX;
}
 
bool Stack::push(const Item& item)
{
	if (top < MAX)
	{
		items[top++] = item;
		return true;
	}
	else
		return false;
}
 
bool Stack::pop(Item& item)
{
	if (top > 0)
	{
		item = items[--top];
		return true;
	}
	else
		return false;
}

stock.h

#pragma warning (disable:4996)
#include <cstring>
#ifndef STACK_H_
#define STACK_H_
 
struct customer
{
	char fullname[35];
	double payment;
};
typedef struct customer Item;
 
class Stack
{
private:
	enum {MAX=10};
	Item items[MAX];
	int top;
	public:
		Stack();
		bool isempty() const;
		bool isfull() const;
		bool push(const Item & item);
		bool pop(Item & item);
};
 
#endif

第6题：

main.cpp

#include <iostream>
#include "stock.h"
 
using namespace std;
 
int main()
{
	Move a = Move{ 23.5,96.32 };
	const Move b = Move{45.36,89.65};
	a.showmove();
	b.showmove();
	a=a.add(b);
	a.showmove();
	a.reset(0.0, 0.0);
	a.showmove();
	return 0;
}

stock.cpp

#include <iostream>
#include "stock.h"
 
using std::cout;
using std::endl;
 
Move::Move(double a , double b )
{
	x = a;
	y = b;
}
 
void Move::showmove() const
{
	cout << "x:" << x<<endl;
	cout << "y:" << y<<endl;
	cout << endl;
}
 
Move Move::add(const Move& m)const
{
	Move temp;
	temp.x = m.x + this->x;
	temp.y = m.y + this->y;
	return temp;
}
 
void Move::reset(double a , double b )
{
	x = a;
	y = b;
}

stock.h

#pragma warning (disable:4996)
#include <cstring>
 
class Move
{
private:
	double x;
	double y;
public:
	Move(double a = 0,double b=0);
	void showmove() const;
	Move add(const Move & m)const;
	void reset(double a = 0,double b=0);
};

第7题：

main.cpp

 
#include"stock.h"
using namespace std;
int main()
{
	Plorg p1, p2;
	p1.show();
	p2.show();
	p2.setplorg(5);
	p1.setci(40);
	p1.show();
	p2.show();
	return 0;
}
 

stock.cpp

#include "stock.h"
using namespace std;
Plorg::Plorg()
{
	cin >> name;
	ci = 50;
}
 
void Plorg::setplorg(int n, const char*iname)
{
	strcpy(name,iname);
	ci = n;
}
 
void Plorg::setci(int n)
{
	ci = n;
}
 
void Plorg::show()
{
	cout << "name:"<<name<<endl;
	cout << "ci:" << ci << endl;
	cout << endl;
}

stock.h

#pragma warning (disable:4996)
#include <iostream>
#include <string>
#include <new>
#include<iomanip>
 
	class Plorg
	{
	private:
		char name[20];
		int ci;
	public:
		Plorg();
		void setplorg(int n,const char* iname = "Plorga");
		void setci(int n);
		void show();
	};

第8题：

main.cpp

 
#include"list.h"
using namespace std;
 
void set(Item& n)
{
	n = 100;
}
void show(Item & n)
{
	cout << n << endl;
}
 
int main()
{
	List L1, L2;
	L1.IsEmpty();
	L2.IsFull();
	Item ar1[5] = {1,2,3,4,5};
	Item a = 5;
	L1.log(ar1,5);
	L2.modify(50,0);
	L1.visit(show);
	cout << endl;
	L2.visit(show);
	cout << endl;
	L1.visit(set);
	L2.visit(set);
	L1.visit(show);
	cout << endl;
	L2.visit(show);
	cout << endl;
	return 0;
}
 

list.cpp

#include "list.h"
using namespace std;
 
List::List()
{
	for (int i=0;i<50;i++)
	{
		stuff[i] = -5;
	}
}
 
void List::log(Item ar[],int n)
{
	for (int i=0;i<n;i++)
	{
		stuff[i] = ar[i];
	}
}
 
void List::modify(Item item,int n)
{
	stuff[n] = item;
}
 
void List::IsFull()
{
	if (stuff[49] != -5)
		cout << "Full" << endl<<endl;
	else
		cout << "not Full" << endl << endl;
}
 
void List::IsEmpty()
{
	if (stuff[0] == -5)
		cout << "Empty" << endl << endl;
	else
		cout << "not Empty" << endl << endl;
}
void List::visit(void(*pf)(Item& n))
{
	int i;
	for ( i=0;i<50;i++)
	{
		if (stuff[i]==-5)
		{
			break;
		}
	}
	for (int j=0;j<i;j++)
	{
		(*pf)(stuff[j]);
	}
}

list.h

#pragma warning (disable:4996)
#include <iostream>
#include <string>
#include <new>
#include<iomanip>
typedef int Item ;
 
class List
{
private:
	Item stuff[50];
public:
	List();
	void log(Item ar[], int n);
	void modify(Item item, int n);
	void IsFull();
	void IsEmpty();
	void visit(void(*pf)(Item & n));
};