Memory - Intro to Computer Science - Harvard's CS50 (2018)

Learn about computer memory and how it relates to programming.

This course teaches the foundations of computer science. This video is lecture 3 of Harvard University's CS50 2018 course (part 4 since the lectures start at 0).

⭐️Contents⭐️
⌨️ (00:00:00) Introduction
⌨️ (00:00:50) Enhance
⌨️ (00:01:41) Week 2 Recap
⌨️ (00:05:10) CS50 IDE
⌨️ (00:14:24) check50
⌨️ (00:18:37) debug50
⌨️ (00:26:43) Taking Off the Training Wheels
⌨️ (00:27:46) compare0.c
⌨️ (00:29:54) compare1.c
⌨️ (00:32:09) Strings Don't Exist
⌨️ (00:41:40) compare2.c
⌨️ (00:47:50) char *
⌨️ (00:48:54) compare3.c
⌨️ (00:51:09) compare4.c
⌨️ (00:57:30) compare6.c
⌨️ (00:59:54) copy0.c
⌨️ (01:06:18) copy1.c
⌨️ (01:10:53) copy2.c
⌨️ (01:11:37) malloc and free
⌨️ (01:13:18) scanf0.c
⌨️ (01:15:36) scanf1.c
⌨️ (01:19:26) scanf2.c
⌨️ (01:25:07) addresses.c
⌨️ (01:30:51) Hexadecimal
⌨️ (01:33:38) Milk and OJ
⌨️ (01:36:44) noswap.c
⌨️ (01:44:51) swap.c
⌨️ (01:57:17) Pointer Fun with Binky
⌨️ (02:00:16) Stack Overflow
⌨️ (02:01:35) struct0.c
⌨️ (02:02:39) struct1.c
⌨️ (02:04:14) struct2.c
⌨️ (02:08:30) Outro

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[harryghgim]

Even fewer people are taking these courses as you go further. Let's finish these courses till the end. You are not alone.

[evensandvik]

I like my professors, but David is at the next level.

This youtube channel has actual, useful content on it! It's a miracle.

[pyrotechnick]

This is hands down the best course I've ever taken online and I can't believe it's on youtube. And that's coming from someone who's paid for online programming courses before. I'm so glad I stumbled on this channel!!!

[netty]

I had to check what speed was set while playing this video....it was normal.

[ravichandrareddy]

This guy had speedforce for breakfast!

[clodgozon]

Are you taking our brains and stuffing it with your words of wisdom?! Cool. Never even had to focus too much to listen about it.

[mattgraves]

I feel a bit mixed about this.
I am a software engineer. I have been for a time.
I have taken (and aced) countless CS courses while in school but I still have profound insight watching this supposed by number a 'half-assed CS' series...I get it, not advanced material but damn, it is so complete in layers for such a short class.
Did I spend a fortune for nothing??
I love the memory and data structures talks best:)

[sscapture]

Super, super! Thank you so much! You answered my questions without me asking them!

[madhavtrivedi]

Thanks for uploading. Real help for highschool dropouts

[Chrosam]

Man.. David brings the light into my heart <3

[cgorfdg]

All these videos are amazing !!! Thank you so much !!
Will be courses for more languages ?

[TheFuture]

Quality class and excellent resources with great proficient teacher status

[georgejbaker]

@freecodecamp, videos 5 and 6 in the CS50 playlist are not playable, as it says they are private videos and they can't be displayed.

[DarkGT]

Meantime on my third world uni, professors teach us this with black board crappy painting of memory array.

[isaaccardin]

Takes me back to the days of installing games on floppy disks in DOS

[Adrian-Carstea]

at 1:23:35 the professor feels lucky, but is actually not. scanf with %s means "String of characters. This will read subsequent characters until a whitespace is found". So even if you entered a lot of characters after "David ", because it's a whitespace after David, it prints ok. The segmentation fault example after that is due to the fact that are no spaces.

[seclvded]

Okay, what's the difference between these two declaration of strings?

char *foo;
or
char foo[10];

This made me even more confused, when should I use the later, or the former?

[TroenderTass]

52:08 I think this is wrong. If s is suppose to come before t alfabethically, it will return a negative value.

[limyohwan]

This is the 2nd video where i see students jump at the opportunity to get some food. What is going on at Harvard?