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发表于 2012-11-13 08:48:12
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1判断语句8 u- u9 l9 _, \7 h+ G5 `& N
if <condition> then0 |6 l0 q1 K& [8 f4 B
<statement sequence1>;
& a4 E4 y" {$ G( G elseif <condition> then
2 Q* _) ?5 O6 C* G6 t; i; S <statement sequence2>;
. [2 O* F _6 e% M# H7 j; r/ t0 p else ; ]) Z. N& _% t2 t; b6 l
<statement sequence3>;
* E: _0 ^% k: q& I6 D( N end;
u+ u/ s+ |% Y如果分支比较多，用：
C: [) y2 t' c: R! p/ B" a6 | inspect <expression>
8 B) R# p, q" p+ }: Q: s when <constant_list> then" `; v$ B: y/ ^% K+ r; A" f) Z
<statement sequence1>;
3 \, M6 y( Z2 Z3 Q$ H when <constant_list> then
& p% X8 c1 D0 N3 Z; g& d! Y <statement sequence2>;
% x1 Y+ J* n2 Y7 |+ y a6 Z% O ...
/ ~% I; F% g$ h$ ^2 ? else
. U, V7 O% Q P/ P <statement sequence3>;" P; u, A9 r3 o% z( [
end;
4 F. D( U& R/ ?
" q; p$ l! K* e/ i# K: I2循环语句
) Q4 V h! q: Z$ u) l (1) from <statement sequence1>2 r0 s& }" O3 u8 H
until <condition> loop
( Y9 j* {& V4 ]! c3 ] <statement sequence2>;' ?8 b# B1 w4 p2 Q) F7 F) ^7 a! i
end;( V+ C1 F1 q) r5 D( q' M$ l& C7 j4 ~
(2) while <condition> loop$ n4 b4 ]8 O+ P3 K. X: A
<statement sequence1>;
/ e, \; w! d9 X( u$ V5 C Y5 c end;
4 y$ W9 M! {2 ? (3) repeat , w$ W1 t t8 l( j4 S
<statement sequence1>;3 g1 d& l5 w& ?# |! C e9 N* i
until <condition>;8 F# q' |% P8 H8 \9 w
(4) for <condition> to <condition> loop
6 S9 a3 G4 t" F( K$ i" c$ F! A <statement sequence1>;* b6 S* H ^4 y, F1 L! W
next;# Y- s3 X" q$ v' g
3中断语句% I% K- u, H- h5 H8 U
waituntil <condition> prio <integer expression>;4 C) o/ f5 r- R1 v
. S3 X( j/ L5 {8 f% V8 ?
: g6 N; h9 p# r以上为常用的函数！: F* }. I: Q/ ^6 Q8 p
还有很多，如有需要我把资料发到你邮箱里 - b0 w \/ G# j
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