Exploring C++20: The Programmer's Introduction to C++

© Ray Lischner 2020

R. LischnerExploring C++20https://doi.org/10.1007/978-1-4842-5961-0_5

5. Simple Input

Ray Lischner¹ 

(1)

Ellicott City, MD, USA

 

So far, the Explorations have focused on output. Now it’s time to turn your attention to input. Given that the output operator is <<, what do you expect the input operator to be? ________________

That didn’t take a rocket scientist to deduce, did it? The input operator is >>, the opposite direction of the output operator. Think of the operators as arrows pointing in the direction that information flows: from the stream to variables for input, or from variables to the stream for output.

Listing 5-1 shows a simple program that performs input and output.

import <iostream>;

int main()

{

   std::cout << "Enter a ...