Problem with the abs function

chenbingjy

Problem with the abs function [Copy link]

My project has a warning about the abs function.

I have added the header file #include "math.h"

Can someone please tell me what's going on? Thanks!

小王同志

Try #include <math.h>. I also suggest you understand the difference between "" and <>

chenbingjy

Comrade Xiao Wang posted on 2020-6-16 18:02 Try #include . I also suggest that you understand the difference between "" and <>

No. Still the same

lcofjp

Just include stdlib.h. abs is declared in stdlib.h. There is no need to include math.h.

abs, labs are in stdlib.h; fabs is in math.h

chenbingjy

lcofjp posted on 2020-6-16 19:40 Just include stdlib.h. abs is declared in stdlib.h. There is no need to include math.h. abs and labs are in stdlib.h; fabs is in math.h ...

Thanks, all right.