For solutions to exercises, see also
https://github.com/ohkimur/the-c-programming-language-2nd-edition-solutions (GitHub-kr) on GitHub and
https://clc-wiki.net/wiki/K&R2_solutions (clc-wiki-kr) on clc-wiki.
All programs on this site have GPL_License, latest edition. Many of these programs have several versions. The content from K&R is quoted in the first placed it is used.
In making these programs, I used the GNU_C_Compiler (gcc) and KWrite text editor. For a graphical interface, try CodeBlocks. See StackOverflow for links_to_standards_and_drafts and the GCC_online_documentation.
All programs on this site have a download link. In addition, you can download archives for programs that contain several files. Archive download links are usually in parentheses (see the Contents or Exercises pages).
At the end of each chapter there is a page with links to the exercises from that chapter. See the chapters listed above, Contents, Exercises, and Index (the entry exercises).
See my Google_Developer_Profile.