赋值运算符重载

最新推荐文章于 2025-11-24 16:52:22 发布

原创最新推荐文章于 2025-11-24 16:52:22 发布 · 141 阅读

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#include<iostream>
using namespace std;
#include<string>

class Person
{
public:
   Person(int age)
   {
       m_Age = new int(age);
   }

   ~Person()
   {
       if(m_Age != NULL)
       {
           delete m_Age;
           m_Age = NULL;
       }
   }

   //赋值运算符重载
   Person& operator=(Person &p)
   {
       if(m_Age != NULL)
       {
           delete m_Age;
           m_Age =NULL;
       }
       m_Age = new int(*p.m_Age);
       return *this;
   }
   int *m_Age;
};

void test()
{
Person p1(12);

Person p2(20);

Person p3(50);

   p3=p2=p1;
   cout<<"p1.m_Age="<<*p1.m_Age<<endl;
   cout<<"p2.m_Age="<<*p2.m_Age<<endl;
   cout<<"p3.m_Age="<<*p3.m_Age<<endl;
}
int main()
{
   test();
   system("pause");
   return 0;
}