February 2022
Beginner
848 pages
22h 40m
English
Content preview from Sams Teach Yourself C++ in One Hour a Day, 9th Edition
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Lesson 13
Casting Operators
Casting is a mechanism by which a programmer can temporarily or permanently change how the compiler interprets an object. (The programmer does not change the object itself but simply changes the interpretation of the object.) Operators that change the interpretation of objects are called casting operators.
In this lesson, you learn
■ The need for casting operators
■ Why C-style casts are not popular
■ The four C++ casting operators
■ The concepts of upcasting and downcasting
■ Why C++ casting operators are not strongly recommended
The Need for Casting
A perfectly type-safe and type-strong world of well-written C++ applications has no need for casting or for casting operators. However, we live in a world ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.