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发表于 2012-11-13 08:48:12
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1判断语句4 _% V5 o c, l, @( Y# Y9 n$ x
if <condition> then" a0 m5 Q6 ~# J* m
<statement sequence1>;( ~, X* U/ v& D% G: l d$ G+ E/ T( @, }
elseif <condition> then
( x! Z. g! Y+ G9 N <statement sequence2>;* e, u: @( j# ]$ T7 I5 V
else ) s0 m! R; n1 f; G: E
<statement sequence3>;
4 I" \1 z' P2 z end;
3 w* [0 V( d2 o2 k5 g/ U7 I8 d如果分支比较多，用：
. F8 @5 h1 x: x* [ inspect <expression>5 e- T: v5 }* W B8 H1 X7 {
when <constant_list> then
B$ }3 f. n( N9 u <statement sequence1>;
5 P4 n5 |( g9 m when <constant_list> then
. g) k. N* ?! @9 V3 @8 N$ h2 D; P+ f* { <statement sequence2>;" ]. n/ H; \+ ]- f
...
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<statement sequence3>;
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2循环语句& N: K* D' W6 m- v7 G
(1) from <statement sequence1>
2 [. L" E5 x" m1 b! Z until <condition> loop3 M( Z+ ]& ^+ G$ J0 |" G8 @
<statement sequence2>;
0 @$ K0 z5 v" a0 d- Y9 L' `! L end;
- R; o$ l& R1 X$ J7 V+ ` (2) while <condition> loop1 g% ^% s# R# y0 C4 j3 J
<statement sequence1>;
: P, V/ q" }8 \# ]& b$ Q end;( s! R! K2 Y n$ R
(3) repeat
; i4 ~6 A8 |0 ?! F! O: ` <statement sequence1>;& R8 ]- L4 D) t5 h
until <condition>;1 V! S3 ? K: g1 H, x
(4) for <condition> to <condition> loop
# U. f% t: s+ s+ w <statement sequence1>;
7 w; k8 e. u* z# l: v; O next;
3 X% c5 k( w5 m3中断语句
/ {( j. G' F7 M; n; e |8 t- e0 z waituntil <condition> prio <integer expression>;
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以上为常用的函数！
& e+ G* e; m* v1 P# U" P还有很多，如有需要我把资料发到你邮箱里 2 k: h$ _9 K% ^0 F; p1 C
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