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C Program Examples
400+ tested C programs, all 91 K&R solutions, free quizzes
Most C tutorial sites are full of void main(), gets(), and outputs nobody ever ran. Every program I ship is compiled with gcc -Wall -Wextra at zero warnings and actually executed — the output you read is the output I got. Inside: 400+ C programs, all 91 K&R exercises solved, 9 topic quizzes (150+ questions) synced with a free Android app, real gdb/Valgrind/Make/CMake guides, and interview prep with tested code. Free, no signup, 100/100 PageSpeed. Solo project since 2011, rebuilt in 2026.
Hi Product Hunt 👋
I started c-program-example.com in 2011 as a place to dump the C programs I was writing. It grew, then sat half-abandoned for a decade — the kind of site with void main(), gets(), and Turbo C screenshots. You've seen a hundred of these.
This year I decided to rebuild it properly, with one rule: nothing gets published unless it compiles with gcc -ansi -Wall -Wextra at zero warnings and actually runs. Every output in these rebuilt posts is a real captured run — the tooling guides (gdb, Valgrind, Make, CMake) were recorded in real Linux containers, and the interview answers all have tested code behind them.
Full transparency: 180+ posts are rebuilt to this standard so far, and I'm still working through the old 2011-era archive — a few relics remain, and finding them is half the fun. This month I fixed a "password encryption" post that subtracted 0xFACA from each character (a value that doesn't even fit in a byte). A reader asked "what is 0xFACA?" back in 2012, and my reply then was "that's just a key." The honest answer took 14 years.
Along the way it grew a free Android quiz app (155 questions, all content unlocked — ads support it, with a one-time remove-ads option) and complete solutions to all 91 exercises from K&R's first seven chapters — as far as I know the only compile-verified set of its kind online.
It's free, no signup, no paywall. I'd love feedback — and if you find a program that doesn't compile, tell me and I'll fix it within the week.
— Sandeepa
About C Program Examples on Product Hunt
“400+ tested C programs, all 91 K&R solutions, free quizzes”
C Program Examples was submitted on Product Hunt and earned 5 upvotes and 7 comments, placing #68 on the daily leaderboard. Most C tutorial sites are full of void main(), gets(), and outputs nobody ever ran. Every program I ship is compiled with gcc -Wall -Wextra at zero warnings and actually executed — the output you read is the output I got. Inside: 400+ C programs, all 91 K&R exercises solved, 9 topic quizzes (150+ questions) synced with a free Android app, real gdb/Valgrind/Make/CMake guides, and interview prep with tested code. Free, no signup, 100/100 PageSpeed. Solo project since 2011, rebuilt in 2026.
On the analytics side, C Program Examples competes within Android, Education and Developer Tools — topics that collectively have 653.9k followers on Product Hunt. The dashboard above tracks how C Program Examples performed against the three products that launched closest to it on the same day.
Who hunted C Program Examples?
C Program Examples was hunted by Sandeepa Nadahalli. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of C Program Examples including community comment highlights and product details, visit the product overview.
Sandeepa Nadahalli