c++代码示例大全（简单好玩的编程代码）

策略模式就是准备一组算法，并将每一个算法封装起来，使得他们可以互换(这儿的关键就是算法的逻辑抽象，接口封装到一个类中，再通过委托的方式将具体的算法实现委托给具体的类来实现)

对称加密速度快加密大数据块文件特点，加密密钥和解密密钥是一样的

非对称加密，加密速度慢、加密强度高高，安全性特点，加密密钥和解密密钥不一样

#include&<iostream&>using namespace std;class Strategy{public:virtual void crypy() = 0;};class AES :public Strategy{public:virtual void crypy(){cout &<&< "AES加密算法 " &<&< endl;}};class DES :public Strategy{public:virtual void crypy(){cout &<&< " DES加密算法" &<&< endl;}};class Context{public:void setStrategy(Strategy *strategy){this-&>strategy = strategy;}void myoperator(){strategy-&>crypy();}private:Strategy *strategy;};void main(){//DES*des = new DES;des-&>crypy();delete des;Strategy*strategy = NULL;strategy= new DES;Context *context = new Context;context-&>setStrategy(strategy);context-&>myoperator();delete strategy;delete context;system("pause");return;}

中介者模式就是定义一个中介对象，未封装系列对象之间的交互，终结者是各个对象不需要显示的相互调用，从而使其耦合性松散，而且可以独立的改变他们之间的交互

中介者问题抛出

#include&<iostream&>using namespace std;#include"string"class Person{public:Person(string name, int sex, int condi){m_name=name;    m_sex=sex;m_condi = condi;}string  getName(){return m_name;}int  getSex(){return m_sex;}int  getCondi(){return m_condi;}protected:string   m_name;int      m_sex;int      m_condi;};class Women :public Person{public:Women(string name, int sex, int condi) :Person(name, sex, condi){}virtual   void  getParter(Person*p){if (this-&>m_sex == p-&>getSex()){cout &<&< "我不是同性恋..(这里就是问题研究,不带任何感情色彩)" &<&< endl;}if (this-&>getCondi() == p-&>getCondi()){cout &<&< this-&>getName() &<&< "和" &<&< p-&>getName() &<&< "绝配" &<&< endl;}else{cout &<&< this-&>getName() &<&< "和" &<&< p-&>getName() &<&< "bu配" &<&< endl;}}};class Man :public Person{public:Man(string name, int sex, int condi) :Person(name, sex, condi){}virtual   void  getParter(Person*p){if (this-&>m_sex == p-&>getSex()){cout &<&< "我不是同性恋..(这里就是问题研究,不带任何感情色彩)" &<&< endl;}if (this-&>getCondi() == p-&>getCondi()){cout &<&< this-&>getName() &<&< "和" &<&< p-&>getName() &<&< "绝配" &<&< endl;}else{cout &<&< this-&>getName() &<&< "和" &<&< p-&>getName() &<&< "bu配" &<&< endl;}}};void main(){Person *xiaofang = new Women("小芳", 2, 5);Person *zhangsan = new Man("张三", 1, 4);Person *lisi = new Man("李四", 2, 5);xiaofang-&>getParter(zhangsan);xiaofang-&>getParter(lisi);system("pause");return;}

中介者代码实现

#include&<iostream&>using namespace std;#include"string"class Person{public:Person(string name, int sex, int condi, Mediator*m){m_name = name;m_sex = sex;m_condi = condi;mediator = m;}string  getName(){return m_name;}int  getSex(){return m_sex;}int  getCondi(){return m_condi;}protected:string   m_name;int      m_sex;int      m_condi;Mediator  mediator;};class Mediator//中介这的抽象父类{public:virtual void getParter() = 0;void setMan(Person*pMan){pMan = man;}void setWomen(Person*pMan){pWomen = women;}public:virtual void getParter(){if (pWomen-&>getSex() == pMan-&>getSex()){cout &<&< "我不是同性恋..(这里就是问题研究,不带任何感情色彩)" &<&< endl;}if (pWomen-&>getCondi() == pMan-&>getCondi()){cout &<&< pWomen-&>getName() &<&< "和" &<&< pMan-&>getName() &<&< "绝配" &<&< endl;}else{cout &<&< pWomen-&>getName() &<&< "和" &<&< pMan-&>getName() &<&< "bu配" &<&< endl;}}private:Person   *pWomen;Person   *pMan;};class Women :public Person{public:Women(string name, int sex, int condi, Mediator*m) :Person(name, sex, condi,m){}public:virtual   void  getParter(Person*p){mediator-&>setMan(p);mediator-&>setWomen(this);mediator-&>getParter();}};class Man :public Person{public:Man(string name, int sex, int condi, Mediator*m) :Person(name, sex, condi,m){}public:virtual   void  getParter(Person*p){mediator-&>setMan(this);mediator-&>setWomen(p);mediator-&>getParter();}};void main(){Mediator *m = new Mediator;Person *xiaofang = new Women("小芳", 2, 5,m);Person *zhangsan = new Man("张三", 1, 4,m);Person *lisi = new Man("李四", 2, 5,m);xiaofang-&>getParter(zhangsan);xiaofang-&>getParter(lisi);system("pause");return;}