hey, i'm curious as to how you would go about passing a variable to the sqrt() function to get the square root of it. i've found that you can directly input a number to it, but when i try something like:i get:Code:`square_root = sqrt(user_number);`

[tim@shibby documents]$ gcc -o SqRt sqrt.c

/tmp/ccuCIkhZ.o(.text+0x82): In function `main':

: undefined reference to `sqrt'

collect2: ld returned 1 exit status

so how can i do this? is there a better way? thanks