>gdb magicNumber
...
(gdb) b 25 if (0!=magic%nums[i])
Breakpoint 1 at 0x1004011e9: file magicNumber.c, line 25.
(gdb) commands
Type commands for breakpoint(s) 1, one per line.
End with a line saying just "end".
>print i
>print nums[i]
>print magic
>end
(gdb) run bartenstein 1
Starting program: /home/Thomas/cs211/src/lab04/magicNumber bartenstein 1
[New Thread 2520.0x562c]
[New Thread 2520.0x3bf8]

Thread 1 "magicNumber" hit Breakpoint 1, main (argc=3, argv=0xffffcc00)
    at magicNumber.c:25
25                              if (0!=magic%nums[i]) bg++;
$1 = 3
$2 = 9
$3 = 1
(gdb) run bartenstein 9
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/Thomas/cs211/src/lab04/magicNumber bartenstein 9
[New Thread 20648.0x52e0]
[New Thread 20648.0xf58]

Thread 1 "magicNumber" hit Breakpoint 1, main (argc=3, argv=0xffffcc00)
    at magicNumber.c:25
25                              if (0!=magic%nums[i]) bg++;
$4 = 5
$5 = 3
$6 = 1
(gdb) run bartenstein 27
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/Thomas/cs211/src/lab04/magicNumber bartenstein 27
[New Thread 3836.0x250]
[New Thread 3836.0x4748]

Thread 1 "magicNumber" hit Breakpoint 1, main (argc=3, argv=0xffffcc00)
    at magicNumber.c:25
25                              if (0!=magic%nums[i]) bg++;
$7 = 4
$8 = 4
$9 = 1
(gdb) p 27*4
$10 = 108
(gdb) run bartenstein 108
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/Thomas/cs211/src/lab04/magicNumber bartenstein 108
[New Thread 17588.0x4da8]
[New Thread 17588.0x42bc]
You found your magic number!
[Inferior 1 (process 17588) exited normally]
(gdb) quit
>