C++17 STL Cookbook

How to do it...

In this section, we are going to read user input into different variables, and see how to handle errors, as well as how to do a little bit more complex tokenizing of input into useful chunks:

1. We only need iostream this time. So, let's include this single header and declare that we use the std namespace by default:

      #include <iostream>      using namespace std;

2. Let's first prompt the user to enter two numbers. We will parse them into an int and a double variable. The user can separate them with white space. 1 2.3, for example, is a valid input:

      int main()      {          cout << "Please Enter two numbers:\n> ";          int x;          double y;

3. Parsing and error checking is done at the same time in the condition part of our if branch. Only if both the ...