May 2012
Intermediate to advanced
679 pages
16h 56m
English
Content preview from Object Oriented Programming with C++, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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13.5 RUN TIME POLYMORPHISM
Consider a situation where a compiler is compiling a program and see a base class pointer pointing to a method declared virtual. Compiler knows that base class pointer can point to derived class object. It does not know where it is pointing at this instant. When the program is running and execution comes to this point, it is possible to decide where base class or derived class method should be executed. Therefore, the compiler postpones the decision. It is taken at runtime. Therefore, such a polymorphism is known as run time polymorphism. Let us see a concrete example.
13.5.1 Run time polymorphism in action
Program: Write a program to show that when base class pointer point to the derived class, method from the derived ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.