Question

i got a pointer to char in my class that would later be used to reference a char array
the size in unknown to me , and for that reason i want to refere to it as char*

i can’t seem to assign it the value of null.

it is only shown as Bad Ptr exception

how can i initalize it so in my ctor i could allocate space for the “char array”
this is what i am trying to accomplish, seems simple enough if it was written in c.

     ctor
     {
          if( m_data != NULL )
                   m_data = new char[m_size];
     }

Answer 1

Don’t test uninitialized data for NULL, just do:

MyClass::MyClass(): // ctor
  m_size(/* something appropriate */), // Note: m_size must precede m_data in the
                                       //       class' definition
  m_data(new char[m_size])
{
}