still square root

The code:
(by Govtcheez)

#include <math.h>
#include<stdio.h>
int main(void)
{
int x = 4;
int y = sqrt(x);
printf("%d",y);
return 0;
}

Don't work.

It comes up with:

gcc -I/u1/pg/aramis/Lib/PI2/include -w -O2 -Dsolaris7 -Dsparc ./src/sq.c -L/u1/pg/aramis/Lib/PI2/lib/sparc-solaris7 -lPI2 -o ./bin/sq
Undefined first referenced
symbol in file
sqrt /var/tmp/cc6vnBFb.o
ld: fatal: Symbol referencing errors. No output written to ./bin/sq
collect2: ld returned 1 exit status
*** Error code 1
make: Fatal error: Command failed for target `conv'

What's up?

Compile with -lm

-lm

This enables the math functions. If you get into the habbit of always compiling with -lm than it won't hurt.