Pointer to Boolean

[vagulus]

I have declared a variable

bool* newData = false;

and I try to use it in a function

void setBoolean(bool* newData)
{
  if (this == true) &newData = true;
}

My compiler tells me, "expression must be a modifiable value".

So, it's wrong. Please, where is it wrong?

Thanks

[TheIdeasMan]

Pointer to Boolean - why?

expression must be a modifiable value

You probably meant *newData = true;

At the moment you a taking the address again with the &, while * dereferences.

if (this == true)

Always true.

[SECMoG1T]

also you are binding your pointer to a temporary object, you need to allocate some memory if you need to manipulate it later.

bool* newData = false;  newData points to a temporal object
  

void setBoolean(bool* newData)
{
  if (true) 
     *newData = true;///  this would lead to a segvault
}

///allocate some memory
bool* newData =new bool(false);

void setBoolean(bool* newData)
{
  if ( true) 
     *newData = true;///a valid operation
 }

[TheIdeasMan]

Right :+)

So the whole function is pointless now?

[vagulus]

andy1992's declaration
///allocate some memory
bool* newData =new bool(false);
seems to have fixed it. I can't actually tell yet, there is some more development to do, but it compiles okay.

Thanks