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

Ctype Functions: toupper() and tolower(): May 9, 2026 Character manipulation functions are handy — and easy to replicate.
The Ctype Functions: May 2, 2026 These handy functions manipulate and examine characters in a variety of fun and useful ways.
Obtaining the Averages: April 25, 2026
Extracting Data Chunks: April 18, 2026 I use colors and codes to ensure that the grid is properly divided into separate chunks.
C Blog 13th Anniversary: April 13, 2026

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

This Month's Exercise

Pointers to Multi-Dimension Arrays: May 1, 2026 Using a pointer to access multi-dimension array data betrays the ugly truth about arrays.

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

Current Titles

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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.