6 votes 6 votes We can make a class abstract by Declaring it abstract using the virtual keyword Making at least one member function as virtual function Making at least one member function as pure virtual function Making all member function const. Object Oriented Programming isro2008 non-gate virtual-function + – go_editor asked Jun 13, 2016 • edited Dec 8, 2022 by Lakshman Bhaiya go_editor 8.6k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 7 votes 7 votes Answer is c) A pure virtual function or abstract function in C++ is a virtual function for which we don’t have any implementation, we can only declare it...... A pure virtual function is implemented by classes which are derived from a abstract class... Ref: https://msdn.microsoft.com/en-us/library/c8whxhf1.aspx Kapil answered Jun 13, 2016 • selected Jun 13, 2016 by Arjun Kapil comment Share Follow See all 0 reply Please log in or register to add a comment.