CS50 was my intro to programming, 3.5 years ago. Now I’m a Professional SWE without a formal CS background. This is the best beginner content available online. love the 2024 iteration 🖤

I have been writing software for 15 years, this is such a great intro. happy for anyone who's starting with this material.

Impressive energy. I remember the first time I watched CS50 so many years ago. I was impressed. And the guy is still full steam ahead. Great teacher!

00:03 Today, we explore the traditional and older language called C. 03:07 Understanding source code and machine code in C 07:13 CS50.dev provides a user interface for writing and running code. 09:08 Introduction to writing, compiling, and running code 13:13 Using double quotes and semicolons in C 15:14 Learning the new syntax in C is necessary to fix the formatting issue. 19:02 Transition from Scratch to C programming language 21:01 Header files in C provide access to pre-written code libraries. 24:50 Using cs50.h to simplify input in C programming. 26:47 Functions in C can have return values, similar to receiving a slip of paper with an answer. 30:29 Remember to use semicolons in C programming. 32:29 Formatting a string using printf function in C 36:22 Using string variables and printf function in C programming. 38:14 Understanding compiler errors and how to troubleshoot them. 41:59 Introducing basic syntax for conditional statements in C 43:49 Standardizing code formatting for consistency 47:46 Introducing variables and data types in C 49:30 C offers succinct syntax for incrementing and decrementing variable values. 53:24 Control-flow diagram represents program's logic 55:26 Branching and decision tree logic in C programming 59:06 Optimizing logical circuits for efficient problem solving 1:01:04 Software using C or C++ is vulnerable to hacking, unlike other languages. 1:04:55 Implementing a more efficient method to handle uppercase and lowercase scenarios in C programming. 1:06:53 Consistency and efficiency in coding 1:10:39 Variables in C and how loops work 1:12:24 Understanding Boolean expressions and control flow in C programming. 1:16:04 Eliminating code duplication using a loop 1:17:54 Looping through code with different syntax and logic 1:21:28 Learn about loop and its syntax 1:23:18 Understanding loops in C 1:27:13 Defining and using functions in C 1:29:07 Function prototypes provide essential information for the compiler. 1:33:07 Creating functions that return values in C 1:35:07 Introducing the addition operation and the printf function 1:39:00 Updating add to take two integers as input 1:40:57 Describing the use of argument and variable names in C 1:44:36 Linux is a popular operating system, commonly used for servers. 1:46:42 Developing muscle memory for programming tasks leads to increased productivity in the long run. 1:50:36 Using rm command to remove files and its implications 1:52:25 Commands becoming muscle memory, basic operations, upcoming new commands, and solving problems. 1:56:03 Discussing the use of loops for better design in coding. 1:57:48 Dynamically printing rows and columns in C for Mario game 2:01:23 Using the CS50 library allows for dynamic input and improves usability. 2:03:16 Using a loop, the program ensures desired user input 2:07:07 Comments in C are used to add notes for humans to understand the code. 2:09:03 Finite memory in devices has real-world implications for counting and storing numbers. 2:12:52 The video discusses usage of larger data types like long integers. 2:14:41 Use %f for float values to ensure accuracy in division. 2:18:44 Computers have limitations in representing numbers, causing rounding errors and imprecision 2:20:46 Numbers and memory constraints can impact code correctness. 2:24:34 Numeric limitations causing critical errors 2:26:51 Facing challenges and mistakes in problem-solving in C programming

i LOVE this new intro! gives a great spooky suspensful vibe

this is my second day. i must say that i am amazed how much i learned i such a little time, and how fun a 2 hour class can be. keep the good material coming!!!

Happy new year David Malan and CS50 team!

I'm so glad I discovered this course, he is an awesome teacher, ` he makes the fundamentals so interesting and clear, it's helping me a lot

Some of the best lectures I've ever seen, super grateful to have the ability to watch these! Thank you!

I love these lectures they just keep getting better every year🙌🤙

The best CS course with the best teacher!

Finally the new CS50X is out, was watching the live stream version until now. Thank you Professor David Malan and team for this.

just finished the lecture.. It literally took me more than 3 weeks, on and off due to my college work....I enjoyed it and looking forward to complete the other lectures and their problem sets as well... CS50 is a masterpiece

This is balls to the wall type engergy to teach people about the wonderful world of software. This is a sight to behold. Awesome.

What an incredible teaching. Thx for the course

I pretty love this new intro ,very impressiive!

Great start of the new year to drop 12 CS classes all in the same day. Time to learn!

i love his energy. I love learning from this man.

Absolutely a great resource. Any one with any background can jump to CS by this kind of resource...... Thank you so much from India........There are some idiots who are doing videos saying "Why not to go for cs50", just to get some vews.

Great lecture/r! Even though I am studying this subject now for 3 years it is great to listen to different approaches to explain some of the concepts. Great energy of the teacher, keep up the good work! :)

I just loveeee this course!!! Thanks Harvard and Professor Malan!

I watched the CS50 2023 edition, and the instructor, David, presented a more structured and cohesive logic in this 2024 lecture, making it more easily understandable for beginners like me. I am truly grateful for David and his team!

Talk about a way to start the year!

What an amazing teacher and team! Another year grateful to be quacking along with you guys! Greetings from Perú !! 💻🐤

The introduction is really good.. One of the best parts of the online lecture

Amazing course, thanks from Brazil, Recife!

Estoy tomando este curso para por fin aprender código y darle un giro diferente a mi vida y mi carrera.

I've been coding in C professionally for over 30 years, and I *still* prefer a good GUI over a CLI. So, if you find that you, too, prefer a GUI, don't let that discourage you. Just following along with these carefully constructed lessons, but feel free to use the GUI to accomplish the same tasks whenever you want. And hold your head up high. All that matters is that you get the job done, done on time, and done right.

Impressive lecture. thanks cs50💛

That was fast ❤ good luck to every one.

Great David! thanx for all

1:23:45 omg the visuals make things so much easier to understand thank you!

starting this beautiful series now, will look back in this comment when I become a software specialist. Thank you so much CS50 LOVED IT❤❤

If I had got a teacher like that with so much energy I would be happy to learn anything

If you are from non english speaking country and find david superfast while teaching try reducing speed to 0.75 👌👌👌thank me later

Thank you Prof.Malan I am just starting C programming

David, you and your staff and Harvard as a whole are helping me recognize my dreams. I started out as a tradesman and I decided my body was not worth being destroyed to get a paycheck. This course has given me the courage to take the course as well as get my Bachelors in CS, so thank you to you and your team!

wow, it took me 3 days and a handful of error messages to get through this lecture. I'm v excited to take this course. Thank you for making it available to the public

Looking forward to the next video

I'm so smart thanks to you. I have little nephews back in India and it makes me cry to see how much more opportunities they will have 😃

Awesome lecture!!!

Yep! Completed week 1 today.

So excited !!!!!🎉

Love the opening theme. 007 finally is going cyber

i watch these every year and never move on. lol

Thank you so much. 👍

This one felt so much harder than the first scratch lesson damn

david the best instructor ever

Great lesson! That was a lot of information for a newbie like me 😅

Awesome

For anybody curious enough: You can print your history of commands and pipe its result to grep and look for any command that you wrote that contains the string passed to grep So lets say you mv a file named duck.txt and you don't remember where you put it: history | grep duck.txt That should return the whole command in which duck.txt was used.

I feel good when students ask questions. 🥰

Waiting for the C++ lesson! Would like to learn something more advanced such as template metaprogramming!

Happy New Year 01/01/24

finally got through Lecture 1

This intro is a masterpiece! Аt the end I expected the duck to shoot at me like in the Bond 007 films )

Really helpful

This course is very entertaining if your try to retype the code in a editor while viewing. I'm inside Godot retyping examples from the lecture. I'm sure this will help my brain absorb more information. I've learned that I don't know how to get user-typed information in GODOT 4 yet. But I will figure it out.

Happy New year everyone and team CS50X . Mark your present if u are starting it from 1/1/24

Guys, you have to do it with the free notes and problems in their website. This is my second time watching, after doing everything in the course notees and it is making so much sense now.

Best thumbnail of all time

Day-1 : Completed.

are we not gonna talk about this introduction that should win more spotlight here?

The best intro for a course. Or "The first cinematic intro for a course in the whole world" #CS50

So good

thanks

Мужик спасибо за уроки

The fact that he's so good at acting at his planned 'mistake' all the time, to allow students to think, this part 2:14:57 I can't really tell if it was planned or real.

thanks for the dark mode 😊

love you malan❤

I finally understand how things execute in the command line and why you have to indicate the program to go up one folder and then run the program from the 'outside' So when we are in the terminal, when we 'enter' commands such ls, cd, grep or whatever, we are telling the computer to execute a program in one of the folders in our path, if we want to run an executable file, we would have to add it to our path and possibly give it an alias, maybe even make a .desktop file to it or we can: Go up one folder with '.' Go in the folder that contains the executable file with '/' Execute the file by calling it by name was we would a function inside a script. At the very least, that's my take on it.

god damnit I just love that intro music!

such great energy, to anyone watching this is way more valuable than bitcoin.

I wish everyone of you luck and enjoyment of this great course. There is no better course for intro to CS than this!

The lecture was engaging, well-structured, and provided a solid foundation for understanding fundamental programming concepts. The instructor’s ability to break down complex topics into manageable and relatable segments was particularly impressive. It’s clear that this university is committed to equipping its students with the skills and knowledge necessary to excel in the tech industry.

1:06:33 There is a principal in life and programming and that is don't repeat yourself unnecessarily.

Heyyy watching this from 2024 ❤

I love Harvard cs50

no complains absolute masterpiece

lets goo

31st comment in this series. Hoping my understanding of this strengthens

Question - In December 2023 I completed the CS50P for Python. I enjoyed the course so much - I am now inspired to take others. In starting with CS50x - I am having an issue with my Codespace. I clicked the [Green Button] to create a New Codespace - and even though it appears I now have 3 Codespaces - they all have all the Python Problem Set Folders. What do I need to do to have an Empty Codespace for CS50x?

omg i really love the background music of these videos!

❤

Linux will always be a must.

1:13:53 / 2:27:40

2.5 hours with a 10 minute break is insane

I am very interested in why don't they use C++ to teach these things instead of plain C? Is it a problem of unnecessary complications it comes with? Cause now course is kinda leaned towards functional or even just procedural programming

I wonder how many miles David scores while going from the computer to the screen in a session, very smart way to keep himself fit.

as someone who knows python, I think you can just wach the class without actually open your editor, becouse in the future everything will be simplified with python class, but you can at least take the good staff of it on how to better write your code and do better designes

At 2:07:13, was the "int n;" accidentally deleted from the code on row 6 from just a few moments before? Trying to figure out where it went...

I want to know about #include it will not be in your c library which you install from mingw so how can I do it, if I am wrong then I hope you can enlighten me

Niceee

bookmarks 1. 1:32:25

I was following along and I got stuck on one of the problems. the calculator I'm getting error on line 16. all I have in line 16 is { the open bracket line 17 has the return a + b; line 18 has ending bracket} what could the problem be. the error code says: calculator. C: 16:1: error : expected identifier or ' C' { 1 error generated.

i use arch BTW

I will study computer science at Harvard university in the future ❤❤❤❤❤😊😊😊

many people give up in this stage.

If you're watching this after Lecture 0, consider yourself lucky to found CS50, and luckier to have completed the first lecture and moved on to the second. To Seize that huge amount of fortune, quickly return to the lecture!

In the explanation regarding loops, won't we have to specify to C where the loop starts? As in tell C to go back to the line 'while counter > 0? Will C not go back to int counter = 3?