Assuming that ptr is a pointer to a class data member of class Check and obj is a pointer to a Check object, which of the following statements would be used to output that data member? A) cout

Question

Assuming that ptr is a pointer to a class data member of class Check and obj is a pointer to a Check object, which of the following statements would be used to output that data member? A) cout << obj.*ptr; B) cout << ( *obj ).*ptr; C) cout << obj->*ptr(); D) cout << ( *obj )->*ptr;

Quizplus · Accepted Answer

Option B uses the correct syntax to access a class data member through a pointer to an object. The parentheses around the pointer to the object (*obj) are necessary since the dot operator (.) has higher precedence than the pointer dereference operator (*). The dot operator is used to access the member of the object pointed to by obj. The parentheses around (*obj) ensure that the pointer dereference operation is applied first to get the object being pointed to, and then the dot operator is applied to access the member pointed to by ptr.

Assuming That Ptr Is a Pointer to a Class Data