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发表于 2012-11-13 08:48:12
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1判断语句
) A; f' N7 R. s" M; A& Z if <condition> then
+ W: U/ h! q2 M$ k) {$ m <statement sequence1>;% e# w& `- G# z
elseif <condition> then# k! b1 L! e, q
<statement sequence2>;
Z4 y" ~) `! ~) @! ^ T1 ] else
, ?: A, O$ I9 C7 p9 c( O2 m$ Q; n <statement sequence3>;
- U; q) O7 s& h. o) v3 ~5 [0 l end;/ i7 S: y% m- R$ d
如果分支比较多,用:6 G' t* z7 o( u
inspect <expression> o+ i' A6 O0 @; ^
when <constant_list> then
9 U% u7 p5 I1 \% v; [- h6 p% u7 S <statement sequence1>;% I4 ?% X, s* ~* ]" q0 e
when <constant_list> then$ A8 f8 ]! b [7 q+ Y% U
<statement sequence2>;
2 q" [( Z0 \, S, S# n! l/ t) n ...
* W5 {. i9 S6 L* w else
S$ ~4 n9 Q- s' ?9 y <statement sequence3>;+ x/ a& \) @$ }% b3 {( C+ L/ V
end;
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2循环语句+ K6 f& K @+ B7 M
(1) from <statement sequence1>
4 i$ H& E1 O- I7 E' i until <condition> loop
/ K, z" V! {1 c. K- `+ L0 s# g <statement sequence2>;
+ @2 c, E. ~2 M9 m+ ]2 t3 N* X" [ end;
( q" g1 f; E- _6 k3 [) |/ O4 s (2) while <condition> loop
( P, b( Z1 P4 R5 D: m6 i <statement sequence1>;
9 A0 a4 |# d, }$ ^6 V end;! a8 J$ c& ~* d @$ `5 ]& V; R% o
(3) repeat
, F9 R0 R2 e, e8 |% E <statement sequence1>;2 a6 M2 [* u/ v* x% m
until <condition>;
2 ^/ g) p9 x: h2 ~2 } (4) for <condition> to <condition> loop. |0 ^+ W5 D* D
<statement sequence1>;
1 K' V T/ ?9 z% E next;
/ v) q1 m. X+ o. Z3中断语句4 m- g* E7 Y2 Z9 ]1 R- ^
waituntil <condition> prio <integer expression>;2 Y4 S0 h: O+ R3 }# n9 x
$ q9 @; y( ~4 F4 \% K' X. }
- r% w# d4 _6 K以上为常用的函数!
# L) }; d! E$ [2 _1 r( P还有很多,如有需要我把资料发到你邮箱里 2 K" m" m+ x R" W
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