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发表于 2012-11-13 08:48:12
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1判断语句+ m+ V9 d2 J- z7 z
if <condition> then& f" M6 u9 q9 p: X/ q$ R/ ^6 O3 `" r
<statement sequence1>;
; O: P6 f3 |# r& T; D5 D( |) S$ K elseif <condition> then) ?( g8 M% l: R T1 ~, f; t* K
<statement sequence2>;0 s8 T0 S" I/ f* g
else
& J' m. K8 i# C/ B% y0 _( y <statement sequence3>;& a" @2 c2 ?8 d/ {) m
end;. x1 Q6 L7 C) H5 ^9 [
如果分支比较多，用：4 v4 ` `0 r5 R/ W+ O# g8 e2 S8 n
inspect <expression>
# x( a: ^3 Y1 E% n when <constant_list> then6 ^( w# [! b7 X- n' Y; J
<statement sequence1>;
" M; e1 ]' ^# t+ ?/ c. ] when <constant_list> then
7 ~9 | L) D% M0 ?2 o/ @ <statement sequence2>;2 H9 I* k3 I9 B0 A# f, X: e( o
...& O2 I# K$ {& j5 a' [
else( }5 D' X* S7 k
<statement sequence3>;2 r7 U7 z2 _% l5 f7 ~. t
end;
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e5 d2 w* e5 \+ b2循环语句
$ p% Z" a/ Y7 n' ^ (1) from <statement sequence1>+ G U/ e# r, \& i
until <condition> loop) A8 h$ o7 H4 \
<statement sequence2>;# i5 B# Z3 S# w2 ~/ D4 H9 M) R
end;" F9 ?. a! F, S8 O
(2) while <condition> loop
! c7 o8 q0 K. ]5 z9 _ <statement sequence1>;
" Q1 J4 _& `! M9 {0 W4 j2 b# \) H- k end;" I; @; Z/ U! I% A: n+ ?2 R% K
(3) repeat
( P: n5 T# T) X6 y: V <statement sequence1>;0 O( o1 u' k4 I( Z
until <condition>;
8 e5 r" b; z% _ (4) for <condition> to <condition> loop% \/ ?0 f o: L* d& M" S
<statement sequence1>;
$ |; f$ |) L( o3 X+ D next;1 @$ O) `5 N* [8 P/ B0 p: r4 B& a/ x. P7 j
3中断语句) R: l* a4 {$ N X1 e% ]
waituntil <condition> prio <integer expression>;
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. h0 ]4 t, b2 _) v# F- y R& t" [& T以上为常用的函数！/ O6 L; H; g- }0 d
还有很多，如有需要我把资料发到你邮箱里 7 V) ?. |8 p7 p, y* ]
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