Question

A function with no action
a) is an invalid function
b) produces syntax error
c) is allowed and is known as dummy function
d) returns zero

Answer 1

It is definitely known as a dummy function

Answer 2

Answer:

A function with no action is known as a dummy function or abstract function. It is allowed in all the modern programming languages and is used to create some actions of that particular function in some different classes.That particular class thus becomes the abstract class.

An abstract class forces the derived class to perform its implementation smoothly. Only abstract classes can have a strict function.