The Unofficial C For Dummies Website

This page supports the C programming books written by Dan Gookin and published by John Wiley.

Recent Lessons

The Element Doesn't Exist: February 16, 2019 It's possible, but extremely dangerous, to access undefined array elements in C.
Variable Length Arrays: February 9, 2019 It's possible to size an array while your code is running, but few programmers try.
Declaring a String Literal as a Pointer: February 2, 2019 It's a handy shortcut, but for manipulating strings it just doesn't work.
Does the File Exist?: January 26, 2019 If your code relies upon an external file, it's good to know that the file exists before it's accessed.
Ignoring Signals: January 19, 2019 You probably don't know what a signal is, but you have definitely seen its effect.

Lessons are posted each Saturday; see the blog for all the Lessons

This Month's Exercise

The Wandering King: February 1, 2019 How long does it take for the king to amble off a chessboard?

Exercises are posted on the first of the month; see the blog for all the Exercises

Current Titles

For support on my older C titles, including the C All-In-One reference and C For Dummies, click the links on the left side of the page.

Online Training

Online training is provided through Linkedin Learning, a subscription service. Click the links to see a preview of my courses and learn how to sign up.

C Essential Training: 1 The Basics

Learning C

Code Clinic: C

"For Dummies" is a trademark or registered trademark of John Wiley.
This site is the online companion to the various
C language For Dummies titles written by Dan Gookin,
published by John Wiley.