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Modern C++ Programming Cookbook

You're reading from   Modern C++ Programming Cookbook Master C++ core language and standard library features, with over 100 recipes, updated to C++20

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781800208988
Length 750 pages
Edition 2nd Edition
Languages
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Author (1):
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Marius Bancila Marius Bancila
Author Profile Icon Marius Bancila
Marius Bancila
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Table of Contents (16) Chapters Close

Preface Learning Modern Core Language Features Working with Numbers and Strings FREE CHAPTER Exploring Functions Preprocessing and Compilation Standard Library Containers, Algorithms, and Iterators General-Purpose Utilities Working with Files and Streams Leveraging Threading and Concurrency Robustness and Performance Implementing Patterns and Idioms Exploring Testing Frameworks C Plus Plus 20 Core Features Bibliography Other Books You May Enjoy
Index

Using monetary I/O manipulators

In the previous recipe, we looked at some of the manipulators that can be used to control input and output streams. The manipulators that we discussed were related to numeric values and text values. In this recipe, we will look at how to use standard manipulators to write and read monetary values.

Getting ready

You should now be familiar with locales and how to set them for a stream. This topic was discussed in the Using localized settings for streams recipe. It is recommended that you read that recipe before continuing.

The manipulators discussed in this recipe are available in the std namespace, in the <iomanip> header.

How to do it...

To write a monetary value to an output stream, you should do the following:

  • Set the desired locale for controlling the monetary format:
    std::cout.imbue(std::locale("en_GB.utf8"));
    
  • Use either a long double or a std::basic_string value for the amount...
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