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发表于 2012-11-13 08:48:12
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1判断语句
( K# c) o; S; }6 F if <condition> then
4 y+ O; }. \7 O7 D <statement sequence1>;% V2 W1 W* F2 r5 x
elseif <condition> then' D, b6 \6 U3 ~ x) p3 _
<statement sequence2>;6 I+ Z( ~* p# }& H! Z9 [
else
' E% a' v2 H! D4 _& g. b <statement sequence3>;- L7 j# J' V0 @0 P( z$ `: ^
end;
& I5 w; f3 `2 L# W* e& v/ }如果分支比较多，用：
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when <constant_list> then8 O7 G5 R5 X& p- Z
<statement sequence1>;
& Q! n$ `7 A2 |4 k# ] when <constant_list> then% S+ B3 Z" m1 I: D$ z3 h4 p' ^
<statement sequence2>;2 E3 j( B* w! G8 O
...
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<statement sequence3>;
: A" g! o. m% k. Aend;
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2循环语句2 c( |0 Q9 s7 F; c
(1) from <statement sequence1>3 _* i/ K' }9 B( p# h
until <condition> loop
: s2 @' U2 T+ f2 b <statement sequence2>;
- i0 ~5 b U, |7 z end;9 M M8 t* }# r3 t$ T& v
(2) while <condition> loop* T3 l( c- b" z( g
<statement sequence1>;
/ u7 }3 R! n0 d. \ end;/ s% j, ?* c$ K$ R
(3) repeat 7 `$ \9 Q$ Y$ V% T4 t: |5 R/ L
<statement sequence1>;
7 e' i9 ]* S7 |3 ^. l# ~3 h until <condition>;
2 e0 a- l, c- F% D9 w+ o (4) for <condition> to <condition> loop$ q0 a, n' s9 c- H/ T
<statement sequence1>;
& k; T0 F: n( M3 h/ J next;
6 H/ r. _# G. S1 u# ~2 L3中断语句
O% q, P. P4 E; P; S waituntil <condition> prio <integer expression>;
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以上为常用的函数！ C2 R: c& J) E
还有很多，如有需要我把资料发到你邮箱里 ' N+ d: z3 s/ \: o" \7 B
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