cpp

参考：https://blog.csdn.net/w616358337/article/details/47302515
https://www.cnblogs.com/dwdxdy/archive/2012/07/17/2595741.html

  1 #include <string>                                                                                                                        
  2 #include <iostream>
  3 using namespace std;
  4 #pragma once
  5 namespace pan{//命名空间
  6         class Person
  7         {
  8             friend void ff();
  9             private:
 10                 string name;
 11                 string age;
 12                 static int count1;//static类变量
 13                 string* gname;//girlfirend name
 14 
 15             public:
 16                 const string getAge();
 17                 void setAge(string age);
 18 
 19                 string getName();
 20                 string getgName();
 21                 void setgName(string s);
 22 
 23                 Person(void);
 24                 Person(string age,string name,string gname);
 25                 Person(const Person& p);//拷贝构造函数
 26                 virtual ~Person(void);
 27 
 28                 void test(Person p);
 29                 Person& operator=(const Person& p);
 30                 static int getcount();//静态函数
 31         };
 32 }
 33 
 34 using namespace pan;
 35 
 36 int Person::count1=0;//static类变量初始化 需要在CPP初始化 需要加类型 int
 37 
 38 void Person::setAge(string age)
 39 {
 40         this->age=age;
 41 }
 42 const string Person::getAge()
 43 {
 44         return this->age;
 45 }
 46 
 47 string Person::getName()
 48 {
 49         return this->name;
 50 }
 51 void Person::setgName(string s)
 52 {
 53         gname=new string;
 54         (*gname)=s;
 55 }
 56 
 57 int Person::getcount()
 58 {
 59         return count1;
 60 }
 61 
 62 Person::Person(void):gname(NULL),name(""),age("")
 63 {
 64         Person::count1++;
 65 }
 66 
 67 string Person::getgName()
 68 {
 69         return *(gname);
 70 }
 71 
 72 Person& Person::operator=(const Person& p)//重载运算符=
 73 {
 74         this->age=p.age;
 75         this->name=p.name;
 76 
 77         if(this->gname==NULL) {
 78                 this->gname=new string;
 79         }
 80         if(&p!=this) {
 81                 *(this->gname)=*(p.gname);
 82         }
 83         return *this;
 84 }
 85 
 86 void Person::test(Person p)
 87 {
 88         cout<<*(p.gname)<<"www";
 89 }
 90 
 91 Person::Person(string age,string name,string gname):age(age),name(name)
 92 {
 93         this->gname=new string;
 94         *(this->gname)=gname;
 95 }
 96 
 97 Person::Person(const Person& p)//拷贝构造函数
 98 {
 99         this->age=p.age;
100         this->name=p.name;
101         this->gname=new string;
102         *(this->gname)=*(p.gname);
103 }
104 
105 Person::~Person(void)
106 {
107         delete gname;
108 }
109 
110 //测试代码
111 int main(void)
112 {
113         pan::Person p1,p2;
114         p1.setAge("aaaa");
115         p1.setgName("liujing");
116         p2=p1;//重载=运算符
117         cout<<p2.getgName()<<endl;
118         p2.setgName("eeee");
119         cout<<p2.getgName()<<endl;
120         cout<<p1.getgName()<<endl;
121         Person p3(p2);//拷贝构造
122         cout<<p3.getgName()<<endl;
123         cout<<Person::getcount()<<endl;//访问静态成员函数
124 
125         return 0;
126 }