CS50x 2026 - Lecture 4 - Memory

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*** This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. *** TABLE OF CONTENTS 00:00:00 - Introduction 00:00:43 – Pixel Art 00:04:37 – Hexadecimal 00:11:44 – Memory 00:18:05 – Pointers 00:31:28 - Strings 00:43:34 – Pointer Arithmetic 00:47:42 – String Comparison 00:57:11 – Copying and malloc 01:13:17 – Valgrind 01:23:11 – Garbage Values 01:25:25 – Pointer Fun with Blinky 01:33:28 – Swapping 01:48:14 – Overflow 01:50:24 – scanf 02:02:20 – File I/O *** HOW TO SUBSCRIBE HOW TO TAKE CS50 edX: Harvard Extension School: Harvard Summer School: OpenCourseWare: HOW TO JOIN CS50 COMMUNITIES Bluesky: Discord: Ed: Facebook Group: Faceboook Page: GitHub: Gitter: Instagram: LinkedIn Group: LinkedIn Page: Medium: Quora: Reddit: Slack: Snapchat: SoundCloud: Stack Exchange: Telegram: Threads: TikTok: Twitter: Twitter Community: YouTube: HOW TO FOLLOW DAVID J. MALAN Facebook: GitHub: Instagram: LinkedIn: Quora: Threads: TikTok: Twitter: *** CS50 SHOP *** LICENSE CC BY-NC-SA 4.0 Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License David J. Malan [email protected]