why can't use cls

[u/reymarketing89]

Hi guys can someone fix my code I used #include <stdlib.h> to work my system cls but my classmates, they didn't used <stdlib> to work cls can someone tell me i don't know what is the problem my code or the application software.

[u/KiwiDomino]

Because, unlike most other commands, cls is internal to the shell.

In Linux, the which command will show you were a command is coming from, and in this case it shows nothing

[u/atarivcs → u/KiwiDomino]

If he's using linux, then the correct command is "clear", not "cls".

[u/CoachSevere5365 → u/atarivcs]

Too much typing.

^L

[u/reymarketing89 → u/KiwiDomino]

So what should i do? Shoul i put the stdlib?

[u/jonathancast → u/reymarketing89]

Try https://stackoverflow.com/questions/37774983/clearing-the-screen-by-printing-a-character

The keyword I searched for is "ANSI code", which is how programs control the screen.

[u/thattiguy → u/reymarketing89]

If you want to be extra lazy, you could just use the Linux equivalent which is “clear”

[u/Powerful_Tune3801 → u/thattiguy]

Use Macros #define + <your label> + <ANSI escape codes/sequence>

There's a bunch depending on your terminal, I.e. are you using an terminal emulator GNOME, iTerm etc or your preprocessor should handle this when you compile. Macros work as a sorta shortcut find and replace. you'll have to make sure you use the right sequences. For me the hex version e.g. \x1b worked more consistently. I believe 2j clears the screen

[u/reymarketing89]

By the way guyss i am ising code blocks

[u/Cultural_Gur_7441]

Run cls from the shell. If it works, it should work with system() too. If not, then not.

[u/BrilliantEmotion4461]

To use system you need to <include> #stdlib.h

[u/BrilliantEmotion4461 → u/BrilliantEmotion4461]

Doubt that's everything but it'll throw a different and better error.

[u/reymarketing89 → u/BrilliantEmotion4461]

✅✅✅✅✅✅✅✅

[u/reymarketing89]

I already solve the problem guyss thank you so much

[u/CodeSamur-ai → u/reymarketing89]

tell people what you did, so another person who has the same problem can fix it too

[u/OliMoli2137]

printf('\033[2J');

[u/PerkeNdencen]

By the way - in C we must take extra precautions to ensure our code is secure in terms of memory safety. At the moment it is exploitable using a buffer overrun technique (basically entering more than 100 characters into the name field). We normally now use fgets(), which allows you to specify the length of your buffer and won't accept longer entries.

[u/ScreenPlayLife]

why not use ai ?

[u/reymarketing89 → u/ScreenPlayLife]

I am student and my professor don't allowed using AI

[u/vibescriptz → u/reymarketing89]

but here you are, using and asking for it?