Answer / sampurna pandey

yes, we can have both private constructor and destructor
and can use them with help of static function for example

class Base
{
static int i;
Base(){}
~Base(){}
public:
static Base *Creat_Object();
static void Destroy_Object(Base *p);
void Add()
{
cout<<i<<" Add function"<<endl;
}
};

int Base::i=0;
Base* Base::Creat_Object()
{
Base * ptr = new Base();
i=5;
return ptr;
}

void Base::Destroy_Object(Base *p)
{
delete p;
}

void main()
{
Base *temp = Base::Creat_Object();
temp->Add();
Base::Destroy_Object(temp);
}

correct me if i am wrong.

Answer / guest

RE: #1

You can have private constructors. It's pretty common
practice when you create a class which you want to never be
constructed with "new" from outside the class (for example,
if you have a static factory member of the class).

Answer / vaibhav meena

We can have Private Destructor and by using Friend Function
we can also instantiate it. :)

Answer / subrat

Hi all,

Please visit this url for more clarity on "Private
destructors"

http://www.codeguru.com/cpp/cpp/cpp_mfc/stl/article.php/c414
3/

Answer / binoy mathew

#include <iostream>
#include <stdlib.h>

class t
{
public:
t()
{
printf("in constr");
}

private: // note that constructor is private here
~t()
{
printf("in destr");
}
};


int main()
{
t *t1 = new t; // create a new obj
delete t1; // delete the obj, which calls destructor
return 0;
}

Try to compile the above code.
following error results...

[root@localhost Desktop]# g++ test.cpp
test.cpp: In function ‘int main()’:
test.cpp:13: error: ‘t::~t()’ is private
tt.cpp:: error: within this context
[root@localhost Desktop]#

....implies, we can't have destructor private.

Answer / shakti singh khinchi

U can't instantiate instance of that class.

Answer / dhananjay

no

Answer / vishwa

we cannot say it destructors are not private. because for
empty class if we use delete operator then it is going to
delete the destructor which is private.

Answer / thuang

In replay to Vishwa,

for empty class, compiler will supply a default constructor
and a destructor for us, their access modifiers were public.

Answer / pooja

no we do not have private destructors because the
destructors can be declared only in public access
specifier.

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