The Unofficial C For Dummies Website

This page supports the C programming books written by Dan Gookin, as well as the C language training courses offered online at LinkedIn Learning. All coders are welcome.

I have been unwillingly retired from my book-writing and online-training careers, thanks to AI. Hopefully, I will create more material in the future. Even so, this site will remain active through 2028.

Recent Lessons

Unions and Data Storage: September 19, 2026 The union is an odd (and dangerous) data structure, but its character lends itself to some useful info spelunking.
Building a Boolean Array: September 12, 2026 Though the array is Boolean, the data is not.
Keeping Up with the Booleans: September 5, 2026 What can you do with a Boolean value?
Booleans: August 29, 2026 George Boole would be proud.
Two File Descriptors?: August 22, 2026 Yes, you can have two file descriptors referencing the same open file. It's weird, and potentially useful.

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

This Month's Exercise

Too Big: September 1, 2026 An integer can be only so large.

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

Current Titles

Purchase

Purchase

Purchase

Purchase

Purchase

Purchase

Purchase

For support on my older C titles: Beginning C Programming, C All-In-One reference and C For Dummies.

Online Training

Online training is provided through Linkedin Learning, a subscription service. Click here to see my available courses. New courses are frequently available and updated.

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