gcc questions

[Dave Mitchell]

On Sat, Nov 26, 2005 at 11:47:43PM +0200, Dotan Cohen wrote:
> [dotancohen at localhost מדעי המחשב]$ gcc 1_3.c
> /tmp/cc0PB7X5.o(.text+0x18b): In function `main':
> 1_3.c: undefined reference to `sqrt'
> collect2: ld returned 1 exit status
> [dotancohen at localhost מדעי המחשב]$

You need to link in the maths library, "m":

gcc -lm 1_3.c


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