The ________ function is similar to the ________ function, which selects the first character of a text string and continues from left to right

An error occurs if:

a. A non-reference, non-const, primitive data member is initialized in the member initialization list. b. An object data member is not initialized in the member initialization list. c. An object data member does not have a default constructor. d. An object data member is not initialized in the member initialization list and does not have a default constructor.

The main difference between a pure virtual function and a virtual function is:

a. The return type. b. The member access specifier. c. That a pure virtual function cannot have an implementation. d. The location in the class.