Add C Programming books

[DasariAishwarya]

What does this PR do?

Add resource(s)

IMPORTANT

• [x] Read our contributing guidelines
• [ ] Is this a revision of a previously submitted PR? No

For resources

Description

Added two C programming books to the C section:

• The C Programming Language Notes - Steve Summit (HTML)
• C Programming: A Modern Approach - K. N. King (PDF)

Why is this valuable (or not)?

These are well-known free resources for learning C programming.

How do we know it's really free?

Both books are freely accessible online without payment.

For book lists, is it a book? For course lists, is it a course, etc.

Book

Checklist:

• [x] Searched for duplicates
• [x] Included author(s) and platform
• [x] Put lists in alphabetical order, correct spacing
• [x] Add needed indications (PDF, HTML)
• [x] Used an informative name for this pull request

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[github-actions[bot]]

Oh no 😟! Conflicts have been found.

Please 🙏, take a moment and address the merge conflicts of your pull request before we can evaluate it again.

Thanks in advance for your effort and patience ❤️!

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/books/free-programming-books-langs.md
440:1-484:98  warning  Alphabetical ordering: swap l.455 and l.454  alphabetize-lists  remark-lint

[DasariAishwarya]

Added two free C programming books and fixed alphabetical order. All linter checks passed.

[eshellman]

I think you've deleted the wrong resource

[DasariAishwarya]

I think you've deleted the wrong resource

Thanks! I’ve restored the correct resource and kept the note about “email address requested.” Please review again.

[github-actions[bot]]

Oh no 😟! Conflicts have been found.

Please 🙏, take a moment and address the merge conflicts of your pull request before we can evaluate it again.

Thanks in advance for your effort and patience ❤️!