How can i get the mentioned output

[namus]

#include<QObject>
#include<QString>
#include<QDebug>
#include<QApplication>
 
class VerboseObject : public QObject {
 
public:
    VerboseObject(QObject *parent, const QString& name):QObject(parent){
        parent->setObjectName(name);
        qDebug()<<"\n constructor \n";
    }
    ~VerboseObject() {
        qDebug()<<"\n Deleted"<<(*this).objectName()<<"\n";
    }
    void do_sthing() {
        qDebug()<<"\n do sthing"<<(*this).objectName()<<"\n";
    }
 
 
};
 
 
int main(int argc , char* argv[])
{
    QApplication A(argc ,argv);
 
    VerboseObject top(&A,"Top");
 
    VerboseObject *x = new VerboseObject(&top,"x");
    VerboseObject *y = new VerboseObject(&top,"y");
    VerboseObject *z = new VerboseObject(&top,"z");
 
    top.do_sthing();
    x->do_sthing();
    y->do_sthing();
    z->do_sthing();
 
    return 0;
}

#include<QObject>
#include<QString>
#include<QDebug>
#include<QApplication>

class VerboseObject : public QObject {

public:
    VerboseObject(QObject *parent, const QString& name):QObject(parent){
        parent->setObjectName(name);
        qDebug()<<"\n constructor \n";
    }
    ~VerboseObject() {
        qDebug()<<"\n Deleted"<<(*this).objectName()<<"\n";
    }
    void do_sthing() {
        qDebug()<<"\n do sthing"<<(*this).objectName()<<"\n";
    }


};


int main(int argc , char* argv[])
{
    QApplication A(argc ,argv);

    VerboseObject top(&A,"Top");

    VerboseObject *x = new VerboseObject(&top,"x");
    VerboseObject *y = new VerboseObject(&top,"y");
    VerboseObject *z = new VerboseObject(&top,"z");

    top.do_sthing();
    x->do_sthing();
    y->do_sthing();
    z->do_sthing();

    return 0;
}

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I am expecting output:

constructor
constructor
constructor
constructor

do sthing "Top"
do sthing "x"
do sthing "y"
do sthing "z"

Deleted "Top"
Deleted "x"
Deleted "y"
Deleted "z"

[JohannesMunk]

Hi!

#include<QObject>
#include<QString>
#include<QDebug>
#include<QApplication>
 
class VerboseObject : public QObject {
 
public:
    VerboseObject(QObject *parent, const QString& name):QObject(parent){
        setObjectName(name);
        qDebug() << "constructor";
    }
    ~VerboseObject() {
        qDebug()<<"Deleted" <<(*this).objectName();
    }
    void do_sthing() {
        qDebug()<<"do sthing" <<(*this).objectName();
    }
 
 
};
 
 
int main(int argc , char* argv[])
{
    QApplication A(argc ,argv);
 
    VerboseObject top(&A,"Top");
 
    VerboseObject *x = new VerboseObject(&top,"x");
    VerboseObject *y = new VerboseObject(&top,"y");
    VerboseObject *z = new VerboseObject(&top,"z");
 
    top.do_sthing();
    x->do_sthing();
    y->do_sthing();
    z->do_sthing();
 
    return 0;
}

#include<QObject>
#include<QString>
#include<QDebug>
#include<QApplication>

class VerboseObject : public QObject {

public:
    VerboseObject(QObject *parent, const QString& name):QObject(parent){
        setObjectName(name);
        qDebug() << "constructor";
    }
    ~VerboseObject() {
        qDebug()<<"Deleted" <<(*this).objectName();
    }
    void do_sthing() {
        qDebug()<<"do sthing" <<(*this).objectName();
    }


};


int main(int argc , char* argv[])
{
    QApplication A(argc ,argv);

    VerboseObject top(&A,"Top");

    VerboseObject *x = new VerboseObject(&top,"x");
    VerboseObject *y = new VerboseObject(&top,"y");
    VerboseObject *z = new VerboseObject(&top,"z");

    top.do_sthing();
    x->do_sthing();
    y->do_sthing();
    z->do_sthing();

    return 0;
}

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results in:

Starting E:\Develop\QtCentre\ObjectDelete\ObjectDelete\debu g\ObjectDelete.exe... constructor
constructor
constructor
constructor
do sthing "Top"
do sthing "x"
do sthing "y"
do sthing "z"
Deleted "Top"
Deleted "x"
Deleted "y"
Deleted "z"
E:\Develop\QtCentre\ObjectDelete\ObjectDelete\debu g\ObjectDelete.exe exited with code 0

You accidentaly set the objectname of the parent instead of the class itself. And you don't need line breaks. Each call to qDebug() automatically ends with a line break.

Joh