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发表于 2012-11-13 08:48:12
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1判断语句0 N3 J) k8 F8 H2 |! y
if <condition> then
7 S) f$ p( [) K; [ <statement sequence1>;9 ~ \8 I! t! c2 s7 _) n2 [' F
elseif <condition> then# O1 N5 R+ i: `3 R; M0 |% G. k2 l
<statement sequence2>;( {# |$ n- q7 K
else 3 Q3 h6 y1 N2 Z1 d4 G
<statement sequence3>;' G+ g* d3 _1 J) A/ ^
end;$ F* a/ X( w, X6 l( ~; J( u
如果分支比较多，用：6 u1 g# y1 I5 U7 p X
inspect <expression>, K* L' V2 b7 J/ q% g4 Q4 V' E$ H
when <constant_list> then
1 a. n+ z; l4 @" D <statement sequence1>;, a8 L+ n( q4 V- P- ^
when <constant_list> then3 d- Z, |# o) ?. B1 h! J
<statement sequence2>;
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else: ]: n/ `2 n5 P$ g2 o& g4 w& Y, ?
<statement sequence3>;) x& `1 ? S+ L5 o/ R
end;5 z9 w1 K; l. @/ D# X1 R
, F) m$ U5 o) a7 k7 ~1 x4 G2循环语句
9 J1 c g4 y! l, e V1 ]; s (1) from <statement sequence1>8 p, Z7 A' b: v! f' I
until <condition> loop
b! E, s" @8 w; A0 u <statement sequence2>;
( Y- V+ Y& T' Q8 \! Y- Q* x2 d# ] end;$ r8 B6 V3 s3 P
(2) while <condition> loop( u* l) s8 }0 ?4 U7 b
<statement sequence1>;/ O/ n* \7 S. l. ?" S7 ^" t( c& Y' d
end;7 b* q: c9 l# A
(3) repeat 5 Q' R/ x1 D6 `$ w' L2 U5 T
<statement sequence1>;
6 e' N r2 ^2 A& F- \7 z: ~ until <condition>;
* d/ p+ F: n# ] (4) for <condition> to <condition> loop/ \6 f F0 k0 T
<statement sequence1>;7 D3 F4 v; b, j. L- H1 ]; _4 o
next;
. z7 G! `% y U+ C& }3中断语句7 \' ?4 k+ M4 _1 k9 X
waituntil <condition> prio <integer expression>;& Z" c; S9 Y# M( `8 L& P
, \+ B1 X2 f# }3 ?
+ C6 [( ?5 J1 h: P以上为常用的函数！6 K, m+ C2 e e: Z/ w
还有很多，如有需要我把资料发到你邮箱里 * p" B& _ i& s* m* i1 l: I
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