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.

Recent Lessons

To #include or not to #include: May 17, 2025 C'mon, are those #include directives really necessary?
Numbers Complex and Imaginary: May 10, 2025 Yes, it's entirely possible for your C programs to hand a value like the square root of -1.
The sqrt(-1.0): May 3, 2025 Can the C compiler calculate the square root of -1?
Silicon Valley Encryption, Part III: April 26, 2025 I attempt to reverse engineer the Silicon Valley easter egg.
Silicon Valley Encryption, Part II: April 19, 2025 The first step to figuring out "how they did it" is to de-obfuscate the code.

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

This Month's Exercise

Formatting a Series for Output: May 1, 2025 The problem is when to separate and when to terminate?

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.