Curious about how iOS apps are made?📱Check out this #CS50seminar led by CS50’s Teaching Fellow Kamryn Ohly, where she walks you through the basics of iOS development using Xcode and Swift — including how to build your own Buzzfeed-style quiz game! Plus, get a glimpse into using APIs, AR, and even launching your app to the App Store.

YouTube

Q: GitHub has disabled my account. What should I do?
A: Best to visit cs50.ly/github in incognito mode (i.e., private mode, so that you're logged out) and contact GitHub directly!

#FAQ50

Join us for a Q&A with Professor David J. Malan and CS50’s own Yuliia Zhukovets this Friday, May 16, at 11:30 AM EDT on CS50’s YouTube.

Watch Professor David J. Malan and CS50’s own Yuliia Zhukovets answer your questions during these Office Hours recorded at the CS50’s office. 🏫

https://youtu.be/w4dNGeCwgVY

Did you get a free certificate prior and now want to upgrade to a verified one? If so, simply log into your edX account and purchase a verified certificate for that course. After making that purchase, email us your edX purchase receipt to certificates@cs50.harvard.edu with the hashtag #upgrade in the subject line.

Do you know about the CS50 Manual?📘 A simplified version of C's "man pages" for functions frequently used in CS50. Whether you're just getting started or need a quick reference, it’s here to help.

https://manual.cs50.io/

"As a graduating senior, if you asked me about one of my most memorable moments at Harvard University, I would still immediately think of my very first lecture here. It happened to be CS50 – Introduction to Computer Science, held in the iconic Sanders Theatre...", by Inno '25.

https://college.harvard.edu/.../my-favorite-class-harvard

Ever wondered how AI is transforming healthcare? 🩻 In this #CS50seminar, CS50’s alum Andrew Sellegren introduces you to CXR Foundation, an open-source model from Google Health AI for analyzing chest X-rays. Learn how to run your first inferences, explore real-world use cases, and hear about AI’s role in modern medical imaging.

CS50 is back in the United Kingdom! Join us in London on Friday, June 20, 2025, for a CS50 Hackathon with the University of Oxford and Meta, with Professor David J. Malan from Harvard, Professor Daniel Wilson from Oxford, Professor Tom Crawford from Oxford (and Cambridge and Tom Rocks Maths), and CS50's alumni and friends from Meta!

https://www.eventbrite.com/e/cs50-hackathon-at-meta-in-london-tickets-1359065434299

Q: Will my real name or username appear on my certificate?
A: For CS50 Certificates, we will ask you what name you wish to appear. For edX’s Verified Certificates, the name associated with your edX account will appear on your verified certificate.

#FAQ50

Meet Zeyad Belal, from Port Said, Egypt. For his #CS50FinalProject, he built a classic memory card game that challenges players to match pairs using logic and concentration. 🧩

https://youtu.be/YFEQVEk6XYM