C Programming Absolute Beginner’s Guide, Third Edition

14. Code Repeat—Using Loops to Save Time and Effort

In This Chapter

• Saving time by looping through code

• Using while

• Using do...while

Now that you’ve learned the operators, you’re ready to play “loop the loop” with your programs. A loop is simply a section of code that repeats a few times. You don’t want a loop to repeat forever—that’s called an infinite loop. The loops you write (if you write them properly—and, of course, you will) should come to a conclusion when they finish doing the job you set them up to do.

Why would you want a program to loop? The answer becomes clear when you think about the advantage of using a computer for tasks that people wouldn’t want to do. Computers never get bored, so you should give them mundane and repetitive ...