Which of the following is correct regarding presence and behavior of constructor is correct. Assume that the class name is C.

a. To use the declaration, C x; requires a default constructor must be present.
b. To invoke the default constructor, the syntax must be C x();
c. A constructor is called automatically when you declare an object of class type, but any constructor can be called after declaration to set all the member variables to a known state.
d. An explicit call to a constructor creates an anonymous object, which can be assigned.
e. In spite of the fact that a constructor appears to be a member function, a constructor may not be called as if it were a member function

Correct responses are: a) c) d) e)
Explanation: b) defines a function that takes no arguments and returns class C object. Part c) is right as far as it goes. It should mention that the constructor may not be called as if it were a member function; rather, it must be called to generate an anonymous object, which is assigned to change the state of an object.