Sams Teach Yourself C++ in 24 Hours, fifth edition

Hour 6. Controlling the Flow of a Program

What You’ll Learn in This Hour:

• What loops are and how they are used

• How to build various loops

• Using switch-case for complex conditional tests

Looping

One of the things that a computer excels at is doing the same thing over and over again. Software doesn’t get tired.

Many programming tasks are accomplished by doing the same thing either a fixed number of times or until a specific condition is met. A block of code that’s executed more than once in a row in a program is called a loop. Each pass through the loop is called an iteration.

These terms will come in handy as you learn during this hour about while loops, do-while loops, and for loops.

while Loops

A while loop causes a program to repeat ...