Replacing the content of a string using regular expressions

In the last two recipes, we have looked at how to match a regular expression on a string or a part of a string and iterate through matches and submatches. The regular expression library also supports text replacement based on regular expressions. In this recipe, we will see how to use std::regex_replace() to perform such text transformations.

Getting ready

For general information about regular expressions support in C++11, refer to the Verifying the format of a string using regular expressions recipe.

How to do it...

In order to perform text transformations using regular expressions, you should perform the following:

1. Include the <regex> and <string> and the namespace std::string_literals for C++14 standard user defined literals for strings:

        #include <regex> 
        #include <string> 
        using namespace std::string_literals;

2. Use the std::regex_replace() algorithm with a replacement string as the third...