C + + Learning notes--constructors and destructors

Question 2. When to execute constructors and destructors 22:59:40 2015-07-22

An experiment was done:

#include <iostream>class object{public:    Object () {        printf ("Create object\n");    };    ~Object () {        printf ("Delete object\n");}    }; void Runobject () {Object obj; printf ("Runobject end\n");} int Main () {//Object *obj=new object ();//delete obj; runobject (); printf ("end\n"); return 0;} 

The output is:

Create Object
Runobject End
Delete Object
End

Add a {} in void Runobject ()

#include <iostream>class object{public:    Object () {        printf ("Create object\n");    };    ~Object () {        printf ("Delete object\n");}    }; void Runobject () {{Object obj;} printf ("Runobject end\n");} int Main () {//Object *obj=new object ();//delete obj; runobject (); printf ("end\n"); return 0;} 

The output is:

Create Object
Delete Object
Runobject End
End

C + + Learning notes--constructors and destructors