c++ Primer Plus（第六版）第十章习题，写代码之路

于 2017-01-20 12:05:08 发布
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分类专栏： c++第六版练习题答案 文章标签： c++primer plus 练习 练习题 c语言
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本文链接：https://blog.youkuaiyun.com/Robot_x/article/details/54630368
本文提供了C++ Primer Plus一书中多个习题的详细解答，包括银行账户类、人员信息类、高尔夫游戏类等的实现。通过这些习题解答，读者可以深入理解C++类的设计与使用。

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c++ Primer Plus（习题10.1)

/*第10.1题的头文件*/
/*主要声明一个类*/
#ifndef BANKCOUNT_H
#define BANKCOUNT_H
#include<string>
class Bankcount
{
private:
	std::string name;
	std::string	num;
	double balance;
public:
	Bankcount(const std::string &n, const std::string &m, double cash=0.0);
	void show() const;
	void deposit(double cash);
	void withdraw(double cash);
};
#endif

/*定义*/
#include<iostream>
#include"bankcount.h"
Bankcount::Bankcount(const std::string &n, const std::string &m, double cash)
{
	name = n;
	num = m;
	balance = cash;
}

void Bankcount::deposit(double cash)
{
	balance += cash;
}

void Bankcount::withdraw(double cash)
{
	balance -= cash;
}

void Bankcount::show()const
{
	using std::cout;
	using std::endl;
	cout << "Countname:  " << name << endl
		<< "Countnumber:  " << num << endl
		<< "Banlance:     " << balance << endl;
}

/*真身，需和10.1定义一起编译，且包含头文件bankcount.h*/
#include<iostream>
#include"bankcount.h"
int main()
{
	using namespace std;
	Bankcount count1=Bankcount{"Saw","3084",20.1};
	count1.deposit(100);
	count1.withdraw(10);
	cout << "Here the result: \n";
	count1.show();
	return 0;
}
/*测试成功，其他算了*/
c++ Primer Plus（习题10.2) 

/*10.2头文件*/
#pragma once
#ifndef PERSON_H
#define PERSON_H
#include<string>
class Person {
private:
	static const int LIMT=25;
	std::string lname;		//名
	char fname[LIMT];		//姓
public:
	Person() { lname = ""; fname[0] = '\0'; } //记得里面的分号不能少
	Person(const std::string &ln, const char *fn="Heyyou");
	void show()const;		//这个fristname,在前
	void Formalshow()const;		//这个lastname在前
};

#endif // !PERSON_H

/*10.2定义，隐藏数据用的*/
#include<string>
#include<iostream>
#include<cstring>
#include"Person.h"
Person::Person(const std::string &ln, const char*fn)   //定义不用加那个啥默认参数
{
	lname = ln;
	strcpy(fname,fn);	
}

void Person::show()const
{
	std::cout << "Name: " << fname
		<< "," << lname << "\n";

}

void Person::Formalshow()const
{
	std::cout << "Dear: " << lname
		<< "," << fname << "\n";
}

#include<iostream>
#include"Person.h"
int main()
{
	using namespace std;
	Person one;
	Person two("Smythecraft");
	Person three("Bimwiddy", "sam");
	one.show();
	one.Formalshow();
	two.show();
	two.Formalshow();
	three.show();
	three.Formalshow();
	return 0;
}


c++ Primer Plus（习题10.3)





c++ Primer Plus（习题10.4)


//重新编写的golf类
#ifndef GOLFCLASS_H
#define GOLFCLASS_H
#include<iostream>
class Golf
{
private: 
	char fullname[40];				//不用作用域为类的常量了
	int handicap;
public:
	Golf(char *name = "no name", int hc = 0);
	void setgolf(const char*name, int hc); 
	void sethand(int n);
	void show()const;
};
#endif // !GOLFCLASS_H




#include"golfclass.h"
Golf::Golf(char*s,int hc)	
{
	std::strcpy(fullname, s);
	handicap = hc;
}

void Golf::setgolf(const char*name, int hc)		//用于重新设置对象的值
{
	std::strcpy(fullname, name);
	handicap = hc;
}

void  Golf::sethand(int n)					//重新设置hanghip的值
{
	handicap = n;
}

void Golf::show()const
{
	std::cout << "Fullname: " << fullname << std::endl
		<< "Handicap: " << handicap << std::endl;
}



//题目感觉理解错了，setgolf和sethand应该返回一个对象
//凑合着用着
//这题运行时出现，对象被重复引用，编译器发神经了
#include"golfclass.h"
#include<iostream>
int main()
{
	using namespace std;
	cout << "Show default value:\n";
	Golf a;
	a.show();
	//重新设置a
	a.setgolf("Saw", 100);
	cout << "After set golf:\n";
	a.show();
	cout << "Only set hangdicap:\n";
	a.sethand(66);
	a.show();
	cout << "Bye!\n";
	return 0;
}






c++ Primer Plus（习题10.5)


/*10.5题目头文件，创建一个包含结构的类*/
#pragma once
#ifndef CUSTOMER_H
#define CUSTOMER_H

typedef struct customer
{
	char fullname[30];
	double payment;
}Item;
class Customer {
private:
	static const int NUM = 3;
	Item items[NUM];
	int top;
	double total;
public:
	Customer();
	bool isfull()const;
	bool isempty()const;
	bool push(const Item&item);
	bool pop(Item&item);
	void showtotal()const;   //用来显示卖家的总收入
};
#endif // !CUSTOMER_H




/*包含头文件Customer.h*/
#include"Customer.h"
#include<iostream>
Customer::Customer()			//一个空的栈
{
	total = 0;
	top = 0;
}

bool Customer::isfull()const {
	return top ==NUM;
}

bool Customer::isempty()const {
	return top == 0;
}

bool Customer::push(const Item &item)
{
	if (top < NUM)
	{
		items[top++] = item;
		return true;
	}
	else
		return false;
}


bool Customer::pop(Item &item)
{
	if (top > 0)
	{
		item = items[--top];
		total += item.payment;
		return true;
	}
	else
		return false;
}


void Customer::showtotal()const
{
	std::cout<< "***total***" <<total<< "***my income.***\n";
}
/*这题更多的是书上的stack，adt接口书上已经写好了*/
#include<iostream>
#include"Customer.h"
#include<ctype.h>
int main()
{
	using namespace std;
	Customer st;		//创建一个空栈
	char ch;
	Item temp;
	cout << "Please enter A to add a customer name and payment,\n"
		<< "D to delete a customer,or Q to exit.\n";
	while (cin >> ch&&toupper(ch) != 'Q')
	{
		while (cin.get() != '\n')
			continue;         //清空多余字符
		if (!isalpha(ch))
		{
			cout << "\a";     //判断是否输入为字母
			continue;
		}
		switch (ch)
		{
		case 'A':
		case'a': cout << "Customer name: ";
			cin.getline(temp.fullname, 30);
			cout << "Paymeng: ";
			cin >> temp.payment;
			if (st.isfull())
				cout << "stack is full!\n";
			else
				st.push(temp);
			break;
		case'd':
		case'D':
			if (st.isempty())
			cout << "stack already empty.\n";
			else
			{
				st.pop(temp);
				cout << "Customer " << temp.fullname << " been delete!\n";
				st.show();
			}
			break;
		}
		cout << "Please enter A to add a customer name and payment,\n"
			<< "D to delete a customer,or Q to exit.\n";
	}
	cout << "Bye!\n";
	return 0;


}
c++ Primer Plus（习题10.6)

/*10.6头文件*/
#pragma once
#ifndef MOVE_H
#define	MOVE_H
class Move {
private:
	double x;
	double y;
public:
	Move(double a = 0, double b = 0);  //默认构造函数
	void showmove()const;
	Move add(const Move &m)const;      //返回一个Move对象，且要加上提供的m对象的值
	void reset(double a = 0, double b = 0);
};
#endif // !MOVE_H


#include"move.h"
#include<iostream>
Move::Move(double a, double b)
{
	x = a;
	y = b;

}
Move Move::add(const Move &m)const
{
	Move temp;              //使用一个临时的对象，不知道可不可以
	temp.x+=x+m.x;
	temp.y= y+m.y;
	return temp;
}
void Move::showmove()const
{
	std::cout << "X=" << x
		<< "  Y= " << y << std::endl;
}
void Move::reset(double a,double b)
{
	x = a;
	y = b;
}


/*简单的类的使用*/
#include<iostream>
#include"move.h"
int main()
{
	using namespace std;
	Move a,c;
	Move b = Move(1.1, 2.5);
	c=a.add(b);
	cout << "b source:  ";
	b.showmove();
	cout << "After reset:  ";
	b.reset();			//重置b的x和y为零
	b.showmove();
	cout << "a source :";
	a.showmove();
	cout << "c is a+b :";
	c.showmove();
	return 0;
	

}







c++ Primer Plus（习题10.7)



#pragma once
#pragma execution_character_set("utf-8")
//本文件为utf-8编码格式
#ifndef PLOGE_H
#define FLOGE_H
class Ploge
{private:
	enum { LQ = 19 };
	char name[LQ];
	int ci;
public:			
	Ploge(const char *n = "Plorg", int num = 0);		//默认构造函数
	void setCI(int num);
	~Ploge() {};
	void show()const;
};
#endif // !PLORG_H




#include<iostream>
#include"ploge.h"
Ploge::Ploge(const char *nm, int num)
{
	std::strcpy(name, nm);
	ci = num;
}

void Ploge::setCI(int num)					//重新设置CI的值
{
	ci = num;
}

void Ploge::show()const
{
	using std::cout;
	using std::endl;
	cout << "Name: " << name << endl
		<< "CI: " << ci << endl;
	
}



#include<iostream>
#include"ploge.h"
int main()
{
	using namespace std;
	Ploge a;
	a.show();
	Ploge b("Saw", 100);
	a = b;
	a.show();
	b.setCI(0);
	b.show();
	return 0;
}






c++ Primer Plus（习题10.8)


//
#pragma once
#pragma execution_character_set("utf-8")
//本文件为utf-8编码格式
#ifndef LISTCLASS_H
#define LISTCLASS_H
typedef int Item;
class List
{
private:
	static const int NUM=5;
	Item items[NUM];
	int couts;								//计数
public:
	List(int couts = 0);			//默认为空列表
	int report() { return couts; }
	bool push(Item &item);
	bool  pop(Item &item);
	bool isempty() { return couts == 0; }
	bool isfull() { return couts == NUM; }
	void visit(void(*pf)(Item &items));					//用函数指针
};
void show(Item &items);						//对每一项进行显示
void change(Item &items);					//对每一项进行重置

#endif // !LISTCLASS_H




#include<iostream>
#include"listclass.h"
//类外的函数
void show(Item &items)
{
	std::cout << items<<"  ";
}

void change(Item &items)
{
	using std::cin;
	using std::cout;
	using std::endl;
	cout << "\nEnter change value for every items: ";
	Item temp;
	cin >> temp;
	items = temp;
	cout << "Change success!\n";
}
//类的方法
List::List(int a)
{
	couts = 0;
}
bool List::push(Item &item)
{
	if (isfull())
	{
		std::cout << "List is full!\n";
		return false;
	}
	items[couts++] = item;
	std::cout << item << " push in list.\n";
	return true;
}

bool List::pop(Item &item)
{

	if (isempty())
	{
		std::cout << "List is empty!\n";
		return false;
	}
	item=items[--couts];
	std::cout << item << " pop out list.\n";
	return true;
}

void List::visit(void(*pf)(Item &items))
{
	for (int i = 0; i < couts; i++)
		pf(items[i]);					//调用函数
}





//这题要自己设计类，参考了别人的代码，本人也有点迷惑
//这是实现文件，成功在此
//一看别人的代码，思想也跟着别人走了，这很搞笑
#include<iostream>
#include"listclass.h"
int main()
{
	using namespace std;
	int i = 0;
	List a;
	cout << "Test isempty.\n";
	if (a.isempty())
		cout << "OK!\n";
	else
		cout << "Try again.\n";
	List b;
	int temp[5];
	while (!b.isfull())
	{
		cout << "Enter #" << i+1 << " item:";
		cin >> temp[i];
		b.push(temp[i]);
		i++;
	}
	b.visit(show);
	b.visit(change);
	b.visit(show);						//下面的仅供娱乐
	cout << "Extra test,for pop method.\n ";
	i = 0;
	while (!b.isempty())					
	{
		b.pop(temp[i]);
		i++;
	}
	cout << "Test complete!\n";
	return 0;
}


快过年年了，还有六天，要把旧的知识和习题清理一下，准备新课程



                

        

    

    
  



    



            

  



          




        



    





    



      

      

        
      

      





	

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