I somehow get a compilation error if I use sqrt(2) from math.h. Any ideas? What do you compile with?

It looks strange for me, but I too got an compilation error when I
tried to use sqrt function from a math.h library.
Probably the compiler they use doesn't have this function i ntheir
library. The managers of this site somehow should be contacted about
that.
If you will discover the answer, please publish it.
I will do the same.

>   I somehow get a compilation error if I use sqrt(2) from math.h.
Any ideas? What do you compile with?

Change sqrt(2) to sqrt((double)2),and it will OK.

with your help,I got AC now.

faint! what compiler timus uses?