Sams Teach Yourself C++ in One Hour a Day, 9th Edition

Lesson 5

Working with Expressions, Statements, and Operators

At its heart, a program is a set of commands executed in sequence. These commands are programmed into expressions and statements and use operators to perform specific calculations or actions.

In this lesson, you learn

• ■   What statements are

• ■   What blocks or compound statements are

• ■   What operators are

• ■   How to perform simple arithmetic and logical operations

Statements

Languages—spoken or programmed—are composed of statements that are executed one after another. Let’s analyze the first important statement you learned:

cout << "Hello World" << endl;

A statement using cout displays text onscreen, via the console. Every statement in C++ ends with a semicolon (;), which defines ...