#include <iostream>using namespace std;class A {public:A(){x=new int;*x=5;}~A(){delete x;x=0;}A(const A&a){cout<<"复制构造函数执行...\n"<<endl;x=new int;*x=*(a.x);}int print()const{return *x;}void set(int i){*x=i;}private:int *x;};int main(){A*a=new A();cout<<"a:"<<a->print()<<endl;A b=(*a);cout<<"a:"<<a->print()<<endl;cout<<"b:"<<b.print()<<endl;b.set(32); cout<<"a:"<<a->print()<<endl;delete a;cout<<"b:"<<b.print()<<endl;return 0;}
搞 不懂这个 A b=(*a)
搞 不懂这个 *x=*(a.x);


拷贝构造函数

*(a.x); 这个是什么意思

???????????????

这排版。。。。。。。