C++17 STL Cookbook

How to do it...

In this section, we will write a one-liner function that counts the words from an input buffer, and let the user choose where the input buffer reads from:

1. Let's include all the necessary headers first and declare that we use the std namespace:

      #include <iostream>      #include <fstream>      #include <string>      #include <algorithm>      #include <iterator>            using namespace std;

2. Our wordcount function accepts an input stream, for example, cin. It creates an std::input_iterator iterator, which tokenizes the strings out of the stream and then feeds them to std::distance. The distance parameter accepts two iterators as arguments and tries to determine how many incrementing steps are needed in order to get from one iterator position to the ...