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发表于 2012-11-13 08:48:12
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1判断语句
0 c: q: o5 ? U- Q if <condition> then; H- V* V5 Z7 T8 j
<statement sequence1>;7 _3 }, D; R" {) ^0 A
elseif <condition> then! L* j, |, `+ Q7 D2 q* e. }
<statement sequence2>;( o4 E3 M* Y7 i4 `: J4 C. b
else 8 y# B; q. ~$ ?, w$ l# G
<statement sequence3>; B1 m4 r6 n6 d- k
end;
7 v: ^8 C; n# w9 x: m0 h+ R- s如果分支比较多，用：
- y" C/ D% i. ? inspect <expression>& X, g7 N4 P' t9 i. ] @% h
when <constant_list> then
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when <constant_list> then
* K) v3 _7 c, W# O <statement sequence2>;7 y4 E! C r' H9 W& i
...
5 Y4 e. z& P1 g" J else
' C4 d( I/ w$ B2 t <statement sequence3>;! D$ j) H( D" Y6 J- q9 \+ @ f3 x K
end;
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9 r5 T, |0 p" K( a, Z( v& {2循环语句
* f' l8 F/ j( V0 D; O: O4 S% N (1) from <statement sequence1>
. ]- x9 A+ e. t' z until <condition> loop
0 c: A" `' G7 y/ M v% M6 d <statement sequence2>;) \) K; z; @4 L7 \
end;, G" N( H; S1 j; t, B/ o
(2) while <condition> loop: i/ F! ?# I, R9 h, J. ]/ ~
<statement sequence1>;9 o9 ^6 I) h7 j5 i5 w* O2 l
end;
. k5 `6 M# S1 O/ P3 { t0 X& s (3) repeat 3 u( ~ Z& ~8 R+ a1 s' C# o
<statement sequence1>;
: i, I) ?' A' {0 y until <condition>;
Y5 X5 a" N6 n3 R( }! K (4) for <condition> to <condition> loop; Q) {" Y8 h/ z# {( w
<statement sequence1>;1 `; C0 b Q* _3 B5 s6 m
next;
- `6 P- o% N* c9 K3中断语句4 w% g7 Z0 {% p6 L" [
waituntil <condition> prio <integer expression>;+ N6 \3 O+ F1 a
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M- \ t& n8 Z: u5 f3 n2 O以上为常用的函数！4 x2 p0 z# x' G& C/ |: q
还有很多，如有需要我把资料发到你邮箱里 5 N) F4 J2 z2 N" Z+ u+ O
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