* Switch case with same code for multiple values
Handle switch case when single piece of code runs for multiple values.
* removed invalid example numbering introduced in merge conflict resolution
Add the text "Two backslash characters (//) are used to _comment_ the code, for better understandability. Anything after // on a line is ignored while compiling the program" to help new users understand commenting.
Keep capitalization consistent in the article's title
Replaced "be able to know" with "become comfortable" to tighten up wording
Replaced "However, they" with "Furthermore, these guides"
Replaced "it" with "the C language"
Replaced "Mac" with "MacOS"
* Minor formatting change and added a note on ==
* Code blocks are now styled as C-language syntax.
* Added a note about the difference of `==` and `=` in the context of condition statements.
* change the second #6 to 7
* Update index.md
I added void pointers, which can be very useful in C programming, especially when dealing with unknown data types but had not been included.
* fixed formatting issues, removed attributions, moved placement to more appropriate location
* adjusted section header size
* Added a warning to the article
Added a warning with an example, which can occur on older compilers.
* fix(guide): c for loop iterator misnomer
declaration not initialisation
* [x] I have read [freeCodeCamp's contribution guidelines](https://github.com/freeCodeCamp/freeCodeCamp/blob/master/CONTRIBUTING.md).
* [x] My pull request has a descriptive title (not a vague title like `Update index.md`)
* [x] My pull request targets the `master` branch of freeCodeCamp.
* [x] None of my changes are plagiarized from another source without proper attribution.
* [x] My article does not contain shortened URLs or affiliate links.
If your pull request closes a GitHub issue, replace the XXXXX below with the issue number.
Closes #XXXXX
* ADD "Undefining Macro"
we can undefine macro whenever we want in code by adding #undefine
* fix: markdown title format
* fix: minor grammar corrections
Capitalise first word and remove extra full stops
* Translate challenge subtitles and example challenge text to Spanish
* Corrected errors in syntax and punctuation
* Multiple corrections of it/s to its plus other grammar corrections
* Correction and added paragraph to CSS Flex article
* Corrected my own typo
* Corrected capitalization, American spellings and typos
