Self-enabling pointer testing and manual implementation

1#include <iostream>2#include <memory>3 4 using namespacestd;5 classA6 {7  Public:8Ainta)9     {Tencout <<"A () ...."<<Endl; One          This->a =A; A     } -     voidfunc () -     { thecout <<"a="<< This->a <<Endl; -     } -~A () -     { +cout <<"~a () ...."<<Endl; -     } + Private: A     intA; at }; - //auto_ptr<a> ptr (new A (Ten)); -  - classmyautoptr - { -  Public: inMyautoptr (A *ptr) -     { to          This->ptr = ptr;//new A (Ten) +     } -~myautoptr () the     { *         if( This->ptr! =NULL) $         {Panax Notoginseng             Deleteptr; -              This->ptr =NULL; the         } +     } AA *operator-() the     { +         return  This-ptr; -     } $a&operator*() $     { -         return*( This-ptr); -     } the Private: -A *ptr;Wuyi }; the  - voidtest01 () Wu { - #if0 AboutA * ap =NewATen); $Ap->func (); -(*AP). Func (); -     Deleteap; - #endif AAuto_ptr<a> PTR (NewATen)); +Ptr->func (); the(*ptr). Func (); - } $ voidtest02 () the { theMyautoptr my_p (NewATen)); the  theMy_p->func ();//My_p.ptr, func () -(*my_p). Func ();//*ptr.func () in } the  the intMain () About { the     //test01 (); the test02 (); thecout <<Endl; +cout <<"End"<<Endl; -System"Pause"); the     return 0;Bayi}

Self-enabling pointer testing and manual implementation