Advanced C #1: Function Pointers

Function pointers, how are they useful and how to use them.
Stackoverflow post with shellcode example: stackoverflow.com/questions/1...
Explain weird C in English: cdecl.org
Socials:
Github: github.com/cacharle
Linkedin: / charles-cabergs

[@cacharle]

I zoom in more in later tutorials
FYI: This series of videos doesn't have any particular order to it, you don't need to watch the early videos to watch the latest ones.

[@ulrich-tonmoy]

its definitely not a good idea to put # after C

[@cacharle]

Indeed, tricking the C# devs into learning C, that was my master plan all along

[@ulrich-tonmoy]

@@cacharle evilest thing one can do to C# dev

[@zavorra3729]

@@cacharle genius, subscribed

[@d3mux_man]

@@cacharle The hero we needed

[@oscarcisneros1368]

I skipped this video three times cause of this the YT algo just knows I like C so it was persistent 😂

[@notaredBox]

my favorite thing about function pointers is that you can store them in a data structure and call any function with the same signature

[@jlewwis1995]

True it's kind of like having methods in c++ except you get runtime polymorphism because you can reassign the function pointer to something else, you can obviously do the same thing in c++ if you specifically want to do that too but generally you would just use normal methods in c++

[@moritzrank01]

what do you call polymorphism in a functional language?

[@FF-hy4ro]

Excellent video! We definitely need more of this.
Once suggestion: the font size.
At least 2 times bigger would be more readable.
Thanks again for the video!

[@cacharle]

thank you :), I've zoomed in even more in later videos.

[@gnorts_mr_alien]

very useful, and good explanation! please keep it up.

[@l.sureshkumar-lsk550]

Pls increase font size for ease of viewing

[@LeCockroach]

great video! it's so interesting that I'm finding lots of fresh videos about a language built more than 50 years ago. Is C becoming more popular, I wonder ?
I love the simplicity of C, compared to other "advanced" languages like C++, Java & Rust. C is one of those easy-to-learn but hard-to-master thingies.
thanks for sharing these little snippets of knowledge

[@cacharle]

Thanks! Unfortunately, I don't think C (or simpler languages) are going to become more popular :') But I really hope I'm wrong about that.
The only simple language that I've seen get traction is Go. I think C will stick around for a long time still so it's definitely worth learning.

[@LeCockroach]

@@cacharleto me, Go is just simple at the surface. If you dig just a bit under that and look at the std source code, you'll see for yourself it's not that simple at all, a lot of nasty stuff is hidden. But it's a good inspiration and a beautiful language to work with.

[@cacharle]

@@LeCockroach hmm, I've never dived in the Go stdlib source but if you have any example, I would be curious to look at them.
I was just saying that out of all the language used widely in production, Go is the only simple on I could think of beside C.

[@tobimarucrypto2862]

I was looking for some advance c tutorial yesterday night and here we go.

[@cacharle]

Happy to serve :)

[@aayushashokkashyap]

The explaination is good. Good content.

[@corbin_zip]

thank you! this is a phenomenal video and i'll be watching and working alongside the others on your channel as well

[@cacharle]

Thanks, I'm glad you got something out of it 😄

[@delusionalaar4031]

nice. I enjoy your explanations.

[@pietraderdetective8953]

I'm nowhere near advanced level in C..but I'm subbed now!
Awesome content Sir!

[@cacharle]

Thank you, I hope this series will make you better at C :)

[@SeanCodingThings]

Nice concept. I love it.

[@proggenius2024]

Thank you so much for doing this. Please continue on this series. I have subscribed and liked ur videos and I am going to watch all of them. It's hard to get an advanced c programming course anywhere else.

[@cacharle]

I'm glad you like it, I'm not sure I will continue the "Advanced C" series but I do plan on making more C related videos and streams with similar content where I dive in more obscure subjects trying to understand how stuff works under the hood.

[@zakraw]

I thought this was C# 1.0 tutorial for a second. Well played😅

[@mandcali7613]

Hi Charles, you can zoom-in a bit so mobile watchers can see the text being typed. And so we dont need to zoom and pan. Thank you for your understanding.

[@cacharle]

It's more zoomed-in in the next videos

[@1PercentPure]

thank you!

[@Brad_Script]

it's also used when you create a thread

[@cacharle]

Indeed

[@nerdydrow]

I wasn't confused, I know C is the Charlemagne of programming languages, top tier thumbnail

[@cacharle]

Finally someone that gets it, I feel less alone now 😂

[@nerdydrow]

@@cacharle a rare history buffs 🤝 C programmers

[@sack-shaw]

If C is Charlemagne then which language is Charles Martel?

[@cacharle]

@@sack-shaw Hmm, a bit less known, slightly older, I would say Fortran or Algol😄

[@GdeVseSvobodnyeNiki]

Oh fuck the first couple of minutes i was thinking "Function pointers in C#? Damn, they change things fast!" But then i noticed "#include " and realised it's #1 is for the video number 1 XD

[@cacharle]

No no, it's actually an extremely advanced C# tutorial. In fact, I managed to make C# so much better that it actually looks like C now

[@GaryMahal]

@@cacharle lol

[@lylemorris2101]

What neovim plugins are you using to get synax errors and intellisense?

[@cacharle]

I use the builtin LSP server of neovim and configure it with nvim-lspconfig: github.com/neovim/nvim-lspconfig
For auto completion, I use nvim-cmp: github.com/hrsh7th/nvim-cmp
My neovim config can be found here: github.com/cacharle/dotfiles/blob/03eb44293762bbbe7459b91a4c7bdf23e62a5bf6/config/nvim/lua/plugins.lua#L69
And cmp config: github.com/cacharle/dotfiles/blob/03eb44293762bbbe7459b91a4c7bdf23e62a5bf6/config/nvim/lua/plugins.lua#L235

[@vatanak8146]

great stuff! Could you do videos os efficient error handling/debbuging in C?

[@cacharle]

I can definitely do a video about error handling. As for debugging, I mostly use printf out of lazyness.. I use gdb for really hard bugs occasionaly.
A good way to "debug" is to have a assert() everywhere to check some condition that should not exist

[@freezingcicada6852]

Even if its baiting C#. The typedef function pointer is the same thing as a delegate in C# but I think the return type is the last parameter. (Also its more fucked up and confusing then reading how pointers are allocated in memory in C, imo)

[@cacharle]

I have 0 experience with C# tbh 😅 but it's nice to know that it looks like C.
and the "bait" was accidental, I already had made too many thumbnails to change it when people made me notice it 🤣

[@freezingcicada6852]

@@cacharle I'm thankful you make these videos. I was learning C and finished reading C - Programming Language 2nd Edition. When your video popped up on my feed.

[@varkonyitibor4409]

I was like "What? Since when C# has function pointers? You mean delegates?"
*click*
Oh it is C

[@cacharle]

Yup, a lot of people get tricked but I'm too lazy to change every single title now 😂

[@thedude4723]

thankyou

[@datametalmachine]

sweet

[@mmmar7317]

Not me looking at this for 3 minutes before understanding that I was looking at C and not C# kek

[@cacharle]

😅

[@vikaskumar-oj2fr]

Tell me , from where i can study the whole c23 programming language?

[@cacharle]

Here is the specification: en.cppreference.com/w/c/23

[@vikaskumar-oj2fr]

@@cacharle thanks

[@N0RT0X]

How can I learn more about pointers?

[@cacharle]

I think writing your own linked list is a good exercise to learn about pointers (or any kind of data structure that contains pointers you need to do operations with)
I used this *great* debugger pythontutor.com/c.html#mode=edit to learn more easily about pointers in school, it has a very nice way of visualizing pointers, hope this helps.

[@grimvian]

This video is a good introduction to C pointers 'C: malloc and functions returning pointers': ua-cam.com/video/3JX6TyLOmGQ/v-deo.html
It's at almost at Charles level regarding teaching :o), but it's strait forward way of explaining about C pointers have have helped many viewers.

[@andreas_tech]

Must be bigger.

[@cacharle]

yo moma big enough tho

[@nulanfr5940]

🤣🤣 I swear it was c#

[@cacharle]

yup, a lot of people do 😅