2015-5-9_15chExercise

Author: tthhee

C++PrimerTest/MemoryCheckTest.cpp

@@ -0,0 +1,23 @@
+#include <iostream>
+
+using namespace std;
+int main()
+{
+
+SYSTEM_INFO sysInfo;
+
+            GetSystemInfo(&sysInfo);
+
+            cout<<"机器属性："<<endl;
+
+            cout<<"页大小="<<sysInfo.dwPageSize<<endl;
+
+            cout<<"分配粒度="<<sysInfo.dwAllocationGranularity<<endl;
+
+            cout<<"用户区最小值="<<sysInfo.lpMinimumApplicationAddress<<endl;
+
+   cout<<"用户区最大值="
+
+<<sysInfo.lpMaximumApplicationAddress<<endl<<endl; 
+return 0;
+}

C++PrimerTest/exercise13.5StrVec.cpp

@@ -22,7 +22,7 @@ void StrVec::free()
 	{
 		// for(auto p = firstfree; p!=elements;)
 		// 	alloc.destroy(--p);
-		for_each(elements, firstfree, [this](string& str){alloc.destroy(&str);});
+		for_each(elements, firstfree, [this](string& str){alloc.destroy(&str);});  //for_each这里传递的是迭代器指向的内容而不是指针
 		alloc.deallocate(elements, cap-elements);
 	}
 }

C++PrimerTest/exercise15-2oop.cpp

@@ -0,0 +1,117 @@
+#include "exercise15-2oop.h"
+
+double Bulk_quote::net_price(size_t n) const
+{
+	if(n >= quantity)
+	{
+		return n*(1-discount)*price;
+	}
+	else
+	{
+		return n*price;
+	}
+}
+
+/**
+*Quote类的拷贝构造函数
+*/
+Quote::Quote(const Quote& q)
+{
+	bookNo = q.bookNo;
+	price = q.price;
+	cout << "Base_Class Copy Constructor!!!" <<endl;
+}
+/**
+*Quote类的拷贝复制运算符
+*/
+Quote& Quote::operator=(const Quote& q)
+{
+	bookNo = q.bookNo;
+	price = q.price;
+	cout << "Base_Class Copy Assignment Operator!!!" << endl;
+	return *this;
+	
+}
+/**
+*Disc_Quote类的拷贝构造函数
+*/
+Disc_quote::Disc_quote(const Disc_quote& d):Quote(d)
+{
+//	Quote(d);
+	quantity = d.quantity;
+	discount = d.discount;
+	cout << "Disc_quote Copy Constructor!!!" <<endl;
+}
+Disc_quote& Disc_quote::operator=(const Disc_quote& d)
+{
+	Quote::operator=(d);
+	quantity = d.quantity;
+	discount = d.discount;
+	cout << "Disc_quote Copy Assignment Operator!!!" << endl;
+	return *this;
+}
+/**
+*Bulk_Quote类拷贝构造函数
+*/
+Bulk_quote::Bulk_quote(const Bulk_quote& b):Disc_quote(b)
+{
+	//Disc_quote::Disc_quote(b);
+	cout << "Bulk_quote Copy Constructor!!!" << endl;
+}
+Bulk_quote& Bulk_quote::operator=(const Bulk_quote& b)
+{
+	Disc_quote::operator=(b);
+	cout << "Bulk_quote Copy Assignment Operator!!!" <<endl;
+	return *this;
+}
+Quote::~Quote()
+{
+	cout << "Base_Class Destroy Function!!!" << endl;
+}
+Disc_quote::~Disc_quote()
+{
+	cout << "Disc_quote Destroy Function!!!" <<endl;
+}
+Bulk_quote::~Bulk_quote()
+{
+	cout << "Bulk_quote Destroy Function!!!" << endl;
+}
+/**
+*PrintTotal()
+*打印n个item的总价
+*/
+double PrintTotal(ostream& os, Quote& item, size_t n)
+{
+	double ret = item.net_price(n);
+	os << "ISBN: " << item.isbn() << "\n";
+	os << "#Sold: " << n << " total due: " << ret << "\n";
+	return ret;
+}
+/**
+*total_receipt()
+*负责将购物篮中的内容逐项打印成清单
+*/
+double Basket::total_receipt(ostream &os) const
+{
+	double sum=0.0;   //用于计算总价
+
+	//iter指向ISBN相同的一批元素当中的第一个
+	//upper_bound返回一个迭代器，该迭代器指向这批元素的尾后位置
+	for(auto iter=items.cbegin(); iter!=items.cend(); iter=items.upper_bound(*iter))
+	{
+		sum += PrintTotal(os, **iter, items.count(*iter));
+	}
+	os << "Total Sale: " << sum << endl;
+	return sum;
+}
+int main()
+{
+//	Disc_quote one;
+	Bulk_quote one("xiangyu", 5.5, 10, 0.2);
+	Bulk_quote three("liuchang", 10.1, 20, 0.3);
+	Basket bsk;
+	bsk.add_item(one);
+	bsk.add_item(three);
+	cout <<"total price: " << bsk.total_receipt(cout) << endl; 
+	return 0;
+}

C++PrimerTest/exercise15-2oop.exe

@@ -0,0 +1,122 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <set>
+#include <memory>
+using namespace std;
+
+class Quote
+{
+private:
+	string bookNo;    //书籍的ISBN编号
+
+protected:
+	double price = 0.0;   //代表普通状态下不打折的价格
+public:
+	Quote() = default;
+	Quote(const string isbn, double pri):
+		bookNo(isbn), price(pri) {}
+	//拷贝构造函数
+	Quote(const Quote& d);
+	//拷贝复制运算符
+	Quote& operator=(const Quote&);
+
+	//该虚函数返回当前对象的一份动态分配的拷贝
+	virtual Quote* clone() const & {return new Quote(*this);}
+	virtual Quote* clone() && {return new Quote(std::move(*this));}
+	//返回给定数量的书籍的销售总额
+	//派生类负责改写并使用不同的折扣算法
+	virtual double net_price(size_t n) const    
+	{
+		return n*price;
+	}
+
+	string isbn() const         
+	{
+		return bookNo;
+	}
+	virtual ~Quote();   //对析构函数进行动态绑定
+};
+
+
+// class Bulk_quote: public Disc_quote
+// {
+// private:
+// 	size_t min_qty = 0;   //获得折扣的最小购买数量
+// 	double discount = 0.0;  //折扣
+// public:
+// 	Bulk_quote() = default;
+// 	Bulk_quote(const string isbn, double pri, size_t min_num, double disc):
+// 		Quote(isbn, pri), min_qty(min_num), discount(disc) {}
+
+// 	//重写此函数以覆盖基类中的此函数
+// 	double net_price(size_t n) const override;
+// 	~Bulk_quote(){}
+// };
+
+class Disc_quote:public Quote
+{
+//	using Quote::Quote;
+protected:
+	size_t quantity = 0;
+	double discount = 0.0;
+public:
+	Disc_quote() = default;
+	Disc_quote(const string isbn, double pri, size_t qty, double disc):
+		Quote(isbn, pri), quantity(qty), discount(disc){}
+	//拷贝构造函数
+	Disc_quote(const Disc_quote&);
+	//拷贝复制运算符
+	Disc_quote& operator=(const Disc_quote&);
+
+	double net_price(size_t n) const = 0; //纯虚函数，函数定义必须放在外面
+	~Disc_quote();
+};
+
+class Bulk_quote: public Disc_quote
+{
+//	using Disc_quote::Disc_quote;
+public:
+	Bulk_quote() =default;
+	Bulk_quote(const string isbn, double pri, size_t min_num, double disc):
+		Disc_quote(isbn, pri, min_num, disc) {}
+	//拷贝构造函数
+	Bulk_quote(const Bulk_quote&);
+	Bulk_quote& operator=(const Bulk_quote&);
+
+	Bulk_quote* clone() const & {return new Bulk_quote(*this);}
+	Bulk_quote* clone() && {return new Bulk_quote(std::move(*this));}
+	//重写此函数以覆盖基类中的此函数
+	double net_price(size_t n) const override;
+	~Bulk_quote();
+};
+
+class Basket
+{
+private:
+
+	//排序规则，用于multiset中的排序规则
+	static bool compare(const shared_ptr<Quote> &lsh, const shared_ptr<Quote> &rsh)
+	{
+		return (lsh->isbn() < rsh->isbn());
+	}
+	multiset<shared_ptr<Quote>, decltype(compare)*> items{compare};
+public:
+	//Basket类使用合成的默认构造函数和拷贝控制成员
+
+	// void add_item(const shared_ptr<Quote> &sale)
+	// {
+	// 	items.insert(sale);
+	// }
+	void add_item(const Quote& sale) //拷贝给定对象
+	{
+		items.insert(shared_ptr<Quote> (sale.clone()));
+	}
+	void add_item(Quote&& sale)
+	{
+		items.insert(shared_ptr<Quote> (sale.clone()));
+	}
+	//打印每本书的总价和购物篮中的所有书的总价
+	double total_receipt(ostream &os) const;
+
+};