Abstract
In this chapter, we’ll explain the fundamental data types that are built into C++. You’ll need these in every program. All of the object-oriented capabilities are founded on these fundamental data types because all the data types that you create are ultimately defined in terms of the basic numerical data your computer works with. By the end of the chapter, you’ll be able to write a simple C++ program of the traditional form: input – process – output.
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Notes
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If need be, you can determine whether char is signed or not for your compiler using the constant std::numeric_limits<char>::is_signed in the <limits> module. We’ll have more to say about the <limits> module later in this chapter.
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- 3.
Not all doubles will be formatted using 16 digits, though. The default formatting of the double value 1.5, for instance, would just be ”1.5”.
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© 2020 Ivor Horton and Peter Van Weert
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Horton, I., Van Weert, P. (2020). Introducing Fundamental Types of Data. In: Beginning C++20. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-5884-2_2
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DOI: https://doi.org/10.1007/978-1-4842-5884-2_2
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Publisher Name: Apress, Berkeley, CA
Print ISBN: 978-1-4842-5883-5
Online ISBN: 978-1-4842-5884-2
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