Question

How come my c program doesn't work when its compiled in gcc c99? It works when I used a online c ide program.

Answer 1

:)
Not much can be said until you post your code, and preferably the error messages!

Answer 2

what compiler is your online ide using

Answer 3

I don't use online ide.
With the code, I will not even need an ide!
It's probably a different compiler online, or the ide has different defaults.

Answer 4

that's what I was suggesting lol

Answer 5

Can't even tag you. lol Should I type a unicode?
Sorry, I thought it was the OP asking!

Answer 6

Using #include <math.h> and got a linker error? Add -lm as argument
Need more information - code, error text etc.