(1)a= __________ ____________
(2)if a=0 __________ then ____________
(3)请填空 ____________
(4)for j=1 to __________ ____________
(5)if __________ then ____________
(6)n=________ ____________
(7)do Until __________ ____________
(8)请填空 ____________
(9)s=__________ ____________
(10)请填空 ____________