Possible Duplicate:
C++: ptr->hello(); /* VERSUS */ (*ptr).hello();
Too bad I can't google this...
Could someone explain or point me to where I can find the difference between these two? I understand * is a dereferencing operator, what about the -> ? What's the difference?
a->b is a syntactic sugar for (*a).b
The only special case is the object operator-> which is called when -> is used on an object. It can be used to "simulate" the object is a pointer ( as with smart references )
In the absence of overloading operator->, p->x is equivalent to (*p).x
来源：https://stackoverflow.com/questions/7681926/c-pointers-difference-between-and