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_3

3. Integer Expressions

Ray Lischner¹ 

(1)

Ellicott City, MD, USA

 

In Exploration 2, you examined a program that defined a few variables and performed some simple operations on them. This Exploration introduces the basic arithmetic operators. Read Listing 3-1, then answer the questions that follow it.

 1 /// Read the program and determine what the program does.

 2

 3 import <iostream>;

 4

 5 int main()

 6 {

 7     int sum{0};

 8     int count{};

 9

10     int x;

11     while (std::cin >> x)

12     {

13         sum = sum + x;

14         count = count + 1;

15     }

16

17     std::cout << "average = " << sum / count << '\n';

18 }

Listing 3-1.

Integer Arithmetic

What does the program in ...