* Mark Phillips ([EMAIL PROTECTED]) wrote:
> Hi,
>
> The following program:
>
>
> #include <stdio.h>
> #include <math.h>
>
> int main(int argv, char **argc){
> double x;
>
> x=sqrt(5.0);
> }
>
>
> does not compile. Instead I get the errors:
>
> $ gcc thick.c
> /tmp/ccU9fgSr.o: In function `main':
> /tmp/ccU9fgSr.o(.text+0x16): undefined reference to `sqrt'
> collect2: ld returned 1 exit status
>
>
> What is wrong?
>
> Thanks,
>
> Mark.
Mark you need to link to math library:
gcc -g thick.c -lm -o thick
And main should be:
int main(int argc, char **argv);
HTH,
Juan Fuentes
