CS50x 2025 - Lecture 1 - C

*** C. Source Code. Machine Code. Compiler. Correctness, Design, Style. Visual Studio Code. Syntax Highlighting. Escape Sequences. Header Files. Libraries. Manual Pages. Types. Conditionals. Variables. Loops. Linux. Graphical User Interface (GUI). Command-Line Interface (CLI). Constants. Comments. Pseudocode. Operators. Integer Overflow. Floating-Point Imprecision. *** TABLE OF CONTENTS 00:00:00 - Introduction 00:01:15 - Source Code 00:04:59 - Visual Studio Code for CS50 00:08:34 - Hello, World 00:18:39 - From Scratch to C 00:25:42 - Header Files 00:29:10 - CS50 Manual Pages 00:32:18 - Hello, You 00:42:31 - Terminal Commands 00:51:06 - Types 00:52:24 - Conditionals 01:00:05 - Variables 01:02:50 - compare.c 01:16:34 - agree.c 01:23:26 - Loops 01:24:41 - cat.c 01:41:55 - Functions 01:56:36 - Correctness, Design, Style 01:58:33 - Mario 02:12:11 - calculator.c 02:20:04 - Integer Overflow 02:22:53 - Boeing 02:24:42 - Pacman 02:25:25 - Truncation 02:27:17 - Type Casting 02:30:10 - Floating-Point Imprecision *** This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. *** HOW TO SUBSCRIBE http://www.youtube.com/subscription_c... HOW TO TAKE CS50 edX: https://cs50.edx.org/ Harvard Extension School: https://cs50.harvard.edu/extension Harvard Summer School: https://cs50.harvard.edu/summer OpenCourseWare: https://cs50.harvard.edu/x HOW TO JOIN CS50 COMMUNITIES Discord:   / discord   Ed: https://cs50.edx.org/ed Facebook Group:   / cs50   Faceboook Page:   / cs50   GitHub: https://github.com/cs50 Gitter: https://gitter.im/cs50/x Instagram:   / cs50   LinkedIn Group:   / 7437240   LinkedIn Page:   / cs50   Medium:   / cs50   Quora: https://www.quora.com/topic/CS50 Reddit:   / cs50   Slack: https://cs50.edx.org/slack Snapchat:   / cs50   SoundCloud:   / cs50   Stack Exchange: https://cs50.stackexchange.com/ Telegram: https://t.me/cs50x Threads: https://www.threads.net/@cs50 TikTok:   / cs50   Twitter:   / cs50   Twitter Community:   / 1722308663522594923   YouTube:    / cs50   HOW TO FOLLOW DAVID J. MALAN Facebook:   / dmalan   GitHub: https://github.com/dmalan Instagram:   / davidjmalan   LinkedIn:   / malan   Quora: https://www.quora.com/profile/David-J... Threads: https://www.threads.net/@davidjmalan TikTok:   / davidjmalan   Twitter:   / davidjmalan   *** CS50 SHOP https://cs50.harvardshop.com/ *** LICENSE CC BY-NC-SA 4.0 Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License https://creativecommons.org/licenses/... David J. Malan https://cs.harvard.edu/malan [email protected]