🚀 go-pugleaf

>Hello... I recently started using the GCC C compiler on my Linux box, and 
>am having some trouble.  I'm trying to use the atan (arc tangent) 
>function (in math.h), but when I compile my code, the linker (I think) 
>tells me:
>/tmp/cca006221.o(.text+0x20): undefined reference to `atan'

>my (test) source code consists of the following:

>#include <stdio.h>
>#include <math.h>

>void main()
>{
> printf("%f\n",atan(5));
>}

	I compiled with gcc -Wall testP.c -lm
and got 1.373401.  You probably forget the -lm.

		Philip