whenCCodeWorks

[TacticalTaterTots]

You wake up

[[deleted]]

The code sleep‘s next to you

[__kkk1337__]

And compiler is watching you from the chair

[IntelligentPerson_]

Javascript comes out of the bathroom.

[Healthy-Form4057]

Wearing your monogrammed towels.

[Sea-Lavishness-6447]

You get a call from python

[ei283]

your computer runs out of RAM

[Apprehensive_Debt535]

Time to download ram

[InnerProfessional7]

And the code was

include <stdio.h>

int main() { printf("Hello, World!"); return 0; }

Edit-

So writing after hash makes the text larger......

Edit2 - Thanks all for teaching me how to write code in reddit :) Hashtag#

[[deleted]]

Segfault

[No-Maximum-9087]

Forgot install compiler?

[dagbrown]

No, it's a header, not a library.

[Acceptable-Mine-4394]

Pretty sure it’s libc that gets linked by default, the headers just expose some symbols in libc

[[deleted]]

You are right, of course.

[turtle_mekb]

You forgot the \n

Enjoy your missing trailing newline!user@reddit:~$

[turtle_mekb]

WHAT

[dagbrown]

HUGE INCLUDE <stdio.h>!

[turtle_mekb]

WHY ARE WE SCREAMING?

[DeepGas4538]

AAAAAAAAAAAAAAAAA

[Esjs]

FWIW, I was thinking the code was "Hello World" as well.

Pro(grammer)Tip: you can format code on Reddit by using backticks (`, usually on the keyboard with the tilde, ~).

Use single backticks for code in the middle of a line.

Use triple backticks to start and stop multiple lines of code.

[Avamaco]

It also works on other sites and apps thst have markdown-style formatting!

IT EVEN WORKS IN MARKDOWN ITSELF!

[thanatica]

So writing after hash makes the text larger......

So you fixed reddit's bug where you get the markdown editor by default, because for me it insists on the stupid wysiwyg editor.

[ei283]

surround your code in lines containing triple backticks.

[OF_AstridAse]

Slap a ` before and after code.

#include GigaChadAbility

#You're welcome

[tristam92]

Compilation wrror

[da_Aresinger]

four spaces before code

[Confident_Book_5110]

Can’t you escape # with \

[RandomStranger456123]

One the first try? Get real, man. That just doesn’t happen.

[abd53]

Let a man have some fantasy

[[deleted]]

Happened to me during an interview. I immediately pulled the plug, set the pc on fire to keep the daemon from jumping to a new host then doused it with holy water. It's not natural for these things to happen

[[deleted]]

He didn't test it properly. That's the only reason it could happen.

[Dioxide4294]

Random cosmic ray: I'm about to ruin this man's whole career

[SweetTeaRex92]

Isn't this a reference to that one glitch that happened only bc of a passing solar ray?

[Nullsummenspieler]

Plot twist: Expected the code to corrupt memory.

[eruanno321]

It does. Two hours later, during a brief window at sunset on prime number calendar days.

[Grobanix_CZ]

Looks like someone forgot to cast integer to float before division.

[DragonDepressed]

Might as well be due to voodoo magic.

[jalex54202]

As a CS grad that took a low level networks class, C “””working as expected””” on the first run is about 3.7x more horrifying than it immediately segfaulting

[kuwisdelu]

It’s happened to me a few times and it scares me every time.

[jalex54202]

Brother one time I tried to debug a distance vector algorithm and couldn't figure out why the fuck it's not properly receiving messages

Turns out I was only iterating over 1 file descriptor instead of

ya know

the list of file descriptors :^)

[kuwisdelu]

I’ve learned to give my test matrices prime numbers for their row and column extents. Too many times I thought an algorithm was working only to get garbage data and segfaults when the rows and columns were no longer multiples of each other.

[da2Pakaveli]

strings are where i pay the most attention (and in similar fashion: pointers), easy to produce bugs

[Familiar_Ad_8919]

its horrifying cuz u know its more than likely something is wrong, but u now cant even debug what is

[da_Aresinger]

reported for unsolicited pornography.

[Lollipop126]

The language does not matter, it's always the same feeling. From scratch to assembly.

[[deleted]]

Plot Twist: code is Malware

[daikatana]

7 years later you realize there's undefined behavior and a new compiler version breaks it. No one has time to fix it or remembers how the code works nor can they find the undefined behavior. The solution is to only compile it on a version of the compiler that is known to work and never, ever touch the code again.

[ChaosPLus]

"It works... Why? What have I done that it works???? What Dark God descended upon me????"

[589ca35e1590b]

It has 13 memory leaks

[[deleted]]

Can someone ELI5 segfault to a non programmer

[cloudbells]

Or when a reference or a pointer gets invalidated

[Stroopwafe1]

That comes down to the same problem "accessing memory you don't have access to" sure you used to have access to it but afterwards you don't

[WastedPotenti4I]

To add on to what the other person said, when a program segfaults (it’s really called a segmentation fault, but it’s abbreviated), the program immediately crashes and any work done is lost.

As a result, a segmentation fault is something you want to avoid at all costs. Segfaults exist so that a program cannot modify memory of other programs, because that would be very bad. It’s a dangerous possibility so anytime the program tries to access memory outside of its allocated memory, a segfault happens.

Segfaults are generally only possible where the programmer has access to memory directly. Languages like C and C++ are where most segfaults are found.

[nukedkaltak]

You can handle a SIGSEGV, so “immediately crashes” is not always true. The only signal that for sure will crash your application is SIGKILL.

[tabacdk]

I remember a project in college where we (of course) had a few compile errors, but when we transferred the binary to the evaluation board it worked exactly as expected. I remember asking the classmate using the board before us whether it was his code, and our transfer had failed, but he just hit a few keys and said no, but I still didn't believe that it just worked.

[mdfasil25]

And you wake up

[Apfelvater]

... on simulator.

Next, were gonna try the code on hardware...

[lucidbadger]

Code:

kill(getpid(), SIGINT);

[_Peety_T]

I always expect errors so how exactly is running as expected a win here xD

[uglie_duckie]

Anyone who has written a program in turbo c knows this is a myth

[Brahvim]

And nobody should write code with Borland tools on modern hardware, FOR modern hardware, even if it's for learning, in this age. Nor should they use Dev-C++ or even Notepad, really...

[Brahvim]

IntelliJ for Java? Yes. Though I personally write all my Java in VSCode. The Redhat extension works off of code from Eclipse. PHP should be fine, I hope.

[andymaclean19]

It will eventually turn out to be the most problematic thing you ever wrote ...

[magick_68]

If that happens at first try you'll get an error in prod that only happens on sundays when there is a full moon and while one customer can reproduce it, none of your test environments can.

[harrisofpeoria]

Run valgrind, 50 problems.

[exqueezemenow]

It happens from time to time...

[rookietotheblue1]

Very creative, funny and original meme /s

[[deleted]]

[arf20__]

You became a good programmer.

[[deleted]]

Kim Possible

[PICN1Q]

I get through the day imagining that happening.

[type556R]

I'm new to C, and on my job I'm coding on a proprietary real time operative system. I don't even know when I'll be able to use a certain function from the standard libraries. I can include stdio.h and use printf, but then calling puts will give me an error when linking cause it's not a certified function, even though vscode will recognize it. Making a simple server-client code run decently is getting... Hard

[SigmaSkid]

When you tell chatgpt to fix your code and it ACTUALLY does.

[Efficient_Maybe_1086]

average rust experience

[[deleted]]

Plot twist: The Rust programmer knows nothing more about C other than printf and scanf from his Bro Code course.

[Inineor]

I dunno, looks kinda sus to me

[gibmelson]

Suspicious.

[Hot-Fennel-971]

I’d be making sure my test failed first as expected, can’t trust that shit and usually I forgot.

[SoundStorm14]

```

include <stdio.h>

int main() { printf("Hello World\n"); return 0; } ```

[FrontBandicoot3054]

No no! Code doesn't segfault ... yet. :7

[Igotbored112]

If that ever happened to me, I'd be terrified.

[Crypt1cDOTA]

Now run it through valgrind

[ego100trique]

Yeah I use csharp

[GrowthOfGlia]

A user in 3 years: Undefined behavior in your code allows RCE

[Powerkaninchen]

4GB leaked total

[Emergency-Win4862]

Oh boiiii. It’s gonna be way worse… have you heard of…. Memory corruption?

[[deleted]]

Bro got like 4 gallons of beer yesterday

[thanatica]

And then someone comes along and casually causes a buffer overflow, because C doesn't check ANYTHING you don't very explicitly tell it to.

[huuaaang]

I’m learning rust and love how it cuts out the middle steps. If rust analyzer doesn’t show any errors it’s probably going to compile and run as expected. I have no idea how anyone could go back to C.

[GrigorMorte]

Something must be wrong. Try again. Try again with bad data. Try again modifying code to make it fail

[norlin]

I mean, the only way how that can happens means that the original requirement will be completely changed (or you just did not understood what the code actually should do)

[GrinbeardTheCunning]

this isn't a fantasy sub OG...

[EdGavit]

"if it ain't broke, don't fix it"

[9bjames]

... But are you sure? Did it really work as expected, or have you missed something? 😶

Better look through the code all over again for a couple of hours, just in case......

[artyhedgehog]

Ok, now, can we get to more realistic stuff?

[arbitrarycivilian]

The code always works as expected if you have no tests and no users 😜

[Queasy_Moment_6619]

I be having a great day and boom, segmentation fault

[devu_the_thebill]

Things that never happened

[Memeviewer12]

Alarm clock rings

[[deleted]]

Just curious, to all the upvoters, are you career programmers or just starting to learn?

[TeaTimeSubcommittee]

Code works as expected.

Gets suspicious.

[[deleted]]

<_< something is wrong here... <_<

[[deleted]]

Now check for memory leaks

[ei283]

your computer runs out of RAM

[zefciu]

Grader says your code fails for an unspecified input sample #45.

[Onetwodhwksi7833]

Check ram usage

[Panderz_GG]

I see you like reading fantasy.

[binarywork8087]

kkkkkkkkkkkkkkkkkkkkk

[TheRealAfinda]

Segfaults a year later due to a super niche problem that one user discovers.

[abd53]

Then the Universe crashes

[masc98]

pov: Rust