1#!./ruby -w 2 3def func_c 4 print "Function C\n" 5 sleep 1 6end 7 8def func_b 9 print "Function B\n" 10 sleep 1 11 func_c 12end 13 14def func_a 15 print "Function A\n" 16 sleep 1 17 func_b 18end 19 20func_a 21