When to use () with classes?
- by SoulBeaver
This is really starting to confuse the hell out of me. When do I use them, when don't I?
For example I was reading a .cpp on linked lists whose class declaration was:
struct CarPart
{
long PartNumber;
char Partname[40];
double UnitPrice;
CarPart *next;
};
class ListOfParts
{
int size;
public:
CarPart *head;
ListOfParts();
~ListOfParts();
const int count() const;
void insert( CarPart *item );
CarPart *retrieve( int pos );
};
With this code, why am I allowed to write
ListOfParts *pPart = new ListOfParts();
CarPart *pCarPart = new CarPart;
Declaring an instance of ListOfParts requires (), but not my CarPart? That's confusing me. When I asked a question before and people told me that such a declaration is a function that returns a ListOfParts object, but not the actual constructor. So I'm guessing this is still something different.
What's happening here?
PS: Am I correct to assume that the const to the right of count() means I cannot modify any values in count?
