How to create a constructor/ destructor for an anonymous class in C++?

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I want to create constructor and destructor for an anonymous class in C++.
I also want to release the memory before program goes out of scope.

eg.

#include <iostream>
using namespace std;
class
{
int *i;
public:
void setData(int x){ i = new int(x);}
void showData() { cout<<"i:"<<*i<<endl;}
}obj;

int main()
{
="" obj.setdata(10);
="" obj.showdata();
="" return="" 0;
}

<b="">What I have tried:

#include <iostream>
using namespace std;
class
{
int *i;
public:
void setData(int x){ i = new int(x);}
void showData() { cout<<"i:"<<*i<

Posted 15-Jan-22 18:58pm

Member 14036158

Updated 16-Jan-22 2:47am

v2

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OriginalGriff · Accepted Answer · 2022-01-15T19:49:00

Solution 1

Strictly speaking, you can't.
But this may help: c++ - How to add constructors/destructors to an unnamed class? - Stack Overflow[^]

Posted 15-Jan-22 19:49pm

OriginalGriff

Comments

Member 14036158 16-Jan-22 9:05am

Thank you

OriginalGriff 16-Jan-22 10:08am

You're welcome!

M Imran Ansari · Accepted Answer · 2022-01-16T02:47:00

Solution 2

Anonymous Classes cannot have the followings:
    Cannot have a constructor or destructor.
    Cannot be passed as arguments to functions (unless type checking is defeated using ellipsis).
    Cannot be returned as return values from functions.

You can read complete story of Anonymous Classes: 
https://docs.microsoft.com/en-us/cpp/cpp/anonymous-class-types?view=msvc-170

Posted 16-Jan-22 2:47am

M Imran Ansari

Comments

Member 14036158 16-Jan-22 9:05am

Thanks Imran.

M Imran Ansari 16-Jan-22 9:33am

My pleasure.