Memory Management Reg

[BalaQT]

hi im using QT4.5 , Debian

Im having some doubts in QT memory management.

for ex:

class childClass
{
  public :
             QString strval;
             int ival;
             childClass();
             QLabel *lblstr;
};
 
 
childClass::childClass()
{
      ival=5;
      strval="test data";
      lblstr=new QLabel(this);
      lblstr->setText("label name");
}

class childClass
{
  public :
             QString strval;
             int ival;
             childClass();
             QLabel *lblstr;
};


childClass::childClass()
{
      ival=5;
      strval="test data";
      lblstr=new QLabel(this);
      lblstr->setText("label name");
}

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im creating a object from another class named, mainClass

mainClass::createChild()
{
      childClass *c=new childClass;
      delete c;
      qDebug<<c->ival;
      qDebug<<c->strval; 
}

mainClass::createChild()
{
      childClass *c=new childClass;
      delete c;
      qDebug<<c->ival;
      qDebug<<c->strval; 
}

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Even after the delete command, qDebug able to print the ival,strval of childClass.
How to clear the variables ival,strval to free the memory?


Thnks
Bala