Re: [suse-programming-e] newbie prob with sqrt in c

Am Mittwoch, 29. Oktober 2003 21:24 schrieb oguz eren:

I'm so new with c language, therefore this may be a fool one.

Here's my code:

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

main() { double x; x = 64.0; printf("kok : %f.\n", sqrt(x)); return 0; }

In function `main': : undefined reference to `sqrt'

collect2: ld returned 1 exit status

Seems it can't find it in math.h; true? A grep showed me it's in tgmath.h instead.But including tgmath.h also didn't change anything.

No, you have to link it with libm. $ gcc -lm -o program program.c -- Andreas