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13.

The principle of__________allows us to create new classes based on existing classes.                        
A. copy construction B. function overloading
C. inheritance D. polymorphism



14.

A constructor that accepts __________ parameters is called the default constructor.                        
A. one B. two
C. no D. three



15.

What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero-argument constructor?                        
A. Compile-time error. B. Preprocessing error.
C. Runtime error. D. Runtime exception.




16.

A union that has no constructor can be initialized with another union of __________ type.                        
A. different B. same
C. virtual D. class



17.

Destructor has the same name as the constructor and it is preceded by ______ .                        
A. ! B. ?
C. ~ D. $



18.

Which of the following gets called when an object goes out of scope?                        
A. constructor B. destructor
C. main D. virtual function



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