CS50x 2026 - Lecture 1 - C

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This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming.

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TABLE OF CONTENTS
00:00:00 - Introduction
00:00:43 - Source Code
00:05:01 - Visual Studio Code for CS50
00:09:00 - Hello, World
00:14:33 - From Scratch to C
00:24:10 - Header Files
00:27:10 - CS50 Manual Pages
00:31:01 - Hello, You
00:44:03 - Terminal Commands
00:55:49 - Conditionals
01:02:55 - Types
01:09:02 - compare.c
01:17:33 - agree.c
01:22:24 - Loops
01:26:09 - cat.c
01:44:46 – Functions
01:56:21 – Correctness, Design, Style
02:02:48 – Mario
02:12:53 – calculator.c
02:18:32 – Integer Overflow
02:22:11 – Boeing
02:24:34 – Pacman
02:25:54 – Truncation
02:26:32 – Type Casting
02:26:47 – Floating-Point Imprecision

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LICENSE

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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License
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David J. Malan
https://cs.harvard.edu/malan
[email protected]