C++17 STL Cookbook

How to do it...

In this section, we'll define a custom data structure and provide facilities to read such items from input streams as standard input:

1. We need to include some headers first and for comfort, we declare that we use the std namespace by default:

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

 

2. As a complex object example, we define a city structure. A city shall have a name, a population count, and geographic coordinates:

      struct city {          string name;          size_t population;          double latitude;          double longitude;      };

3. In order to be able to read such a city from a serial input stream, we need to overload the stream function operator>>. In this ...