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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
- e; Q Y# `, j8 z if <condition> then
8 x7 b% O1 ~& n1 Y, x <statement sequence1>;, w1 s. J; l W, N2 r+ H$ F
elseif <condition> then# i+ `/ B. s4 Q1 K5 O u- N
<statement sequence2>;2 C7 o# F& W- Y' Q
else - @% s( I! t5 ?" a2 y
<statement sequence3>;
+ | e1 z4 d9 T: S end;
4 W. a4 q8 g8 U* m; N如果分支比较多，用：
8 d6 F, C5 d# \7 t1 A9 Y inspect <expression>
8 r. X( Q* l m! G S# r9 m4 V0 ?, P when <constant_list> then
; S. \" M, c, x1 N% P <statement sequence1>;
; m' X+ i- Q) d) ^" J+ P: U! ~ when <constant_list> then) ^ a6 t; g* g% Q
<statement sequence2>;
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else
- z: f \. l# ? J <statement sequence3>;9 t: R; @, J3 [! p/ M
end;' b/ z5 A$ y0 s& t4 {: G& L8 m
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2循环语句
( j1 L0 k1 n* f. H4 z (1) from <statement sequence1>
9 t2 d2 v' w5 e, O9 M& J until <condition> loop! ?, C& P: O3 z9 K/ Y$ i, A9 E) n7 X, M
<statement sequence2>;8 P8 S$ o& M, T# Q* y
end;
5 k! y- n' |. J( o" E( [ (2) while <condition> loop
6 n8 v* z: U& R- G/ p& C <statement sequence1>;
6 Y" [. `) h& p! i. R end;
, ~7 S! F6 Q1 n$ Y0 I$ H) G5 K' u (3) repeat " x+ h0 q) F* ~, {
<statement sequence1>;
7 F: P/ L! L3 K" I5 o until <condition>;$ r/ \1 b' a9 n/ B: L, }9 W
(4) for <condition> to <condition> loop- \2 k& |# |/ b* k% a# P
<statement sequence1>;
/ n# K1 ^* A! a" z6 k+ p' y$ i2 A next;
- n$ Q6 g- ?' M" Y3中断语句# N* h. ?* `0 ]! c( |1 {9 r5 B/ {
waituntil <condition> prio <integer expression>;& i# Q$ C+ \! S' v* @
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以上为常用的函数！: U5 s% q) h- i" E% X2 A# Y0 M
还有很多，如有需要我把资料发到你邮箱里 $ ]7 n# D j4 }& i# J& K6 z) |
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