C++ programs consist of classes, functions, variables, and other component parts. Most of this book is devoted to explaining these parts in depth, but to get a sense of how a program fits together, you must see a complete working program.
In this lesson, you learn
• The parts of a C++ program
• How the parts work together
• What a function is and what it does
• Basic input and output operations
Your first C++ program in Lesson 1, “Getting Started,” did nothing more than write a simple “Hello World” statement to the screen. Yet this program contains some of the most important and basic building blocks of a C++ program. You use Listing 2.1 as a starting point to analyze components ...