The Unofficial C For Dummies Website

This page supports the C programming books written by Dan Gookin and published by John Wiley, as well as the C language training courses offered online at LinkedIn Learning.

Recent Lessons

String Versions of ctype Functions: October 17, 2020 Why not apply functions like toupper() and tolower() to an entire string, not just a single character?
Is This Unix?: October 10, 2020 With so many C language functions specific to Unix, it helps to know whether your code is running on that platform.
The Terminal Has a Name: October 3, 2020 In Unix, the terminal is an I/O device but also a file. When you know it's name, you can write text to the terminal just as you can output text to a file.
What is the Maximum Value?: September 26, 2020 Yet another way to pull out the maximum value, though this time from an array.
Looping with Testing Variables: September 19, 2020 The issue is how to best initialize a variable used in a loop at its terminating condition.

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

This Month's Exercise

A Cumulative Total: October 1, 2020 Many math puzzles explore doubling values. This time, I'm going to be boring and just add them.

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: 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 online training is available frequently.

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"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.