.oO(beadon1@nys32a-005 ~/work/test_cases) gcc -o mult_send mult_sender.c
/var/tmp//cc6gwzNa.o: In function `main':
mult_sender.c:(.text+0x5c): undefined reference to `inet_aton'
mult_sender.c:(.text+0xd8): undefined reference to `socket'
mult_sender.c:(.text+0x140): undefined reference to `sendto'
collect2: ld returned 1 exit status