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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 U7 ]0 y |9 N8 H& B3 t
if <condition> then
' O) A- ?0 U$ y. y# A! t/ ]8 H <statement sequence1>;
- Z1 \: ]( T1 x/ a: ] elseif <condition> then
; v: C. \' N5 ] <statement sequence2>;$ Z1 F7 q E& h& r [ r7 r8 k& D( D
else
4 @( M& J4 d) [0 J6 }5 s <statement sequence3>;
9 w) S9 @: G0 m6 X+ h end;$ G, k. T* O5 e p% h( M4 v
如果分支比较多,用:: s4 G6 _+ ^! D* b1 C9 m5 u* B/ z/ l1 z
inspect <expression>! P# S2 J1 C- p7 L& ~7 R
when <constant_list> then$ ~; t5 J8 h6 Q; y4 ~: H' p( U; L% H
<statement sequence1>;
* @" U7 ^- ^; n( C3 j' b3 O when <constant_list> then2 h B# q; H- x/ E! [# m4 l
<statement sequence2>;
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else8 e; e: J1 b6 e& Q
<statement sequence3>;# C& o" A2 t. p' w# x- l
end;/ x" Q6 X9 g5 J% B" D. p
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2循环语句
1 ?' z+ R* { v4 @! N" N (1) from <statement sequence1># t2 Z2 N# l8 }; M: A+ t" \
until <condition> loop
( |; _& e) M3 k <statement sequence2>;4 _, O$ a9 @9 ]' B3 i
end;
1 o3 S* l! K3 Z6 X) K' Y# v (2) while <condition> loop5 e" J* t% S4 D+ O1 a9 L5 c
<statement sequence1>;2 I- {1 G e0 S! y& T4 s
end;( C9 l% U9 M; q/ U! i
(3) repeat
1 f$ [5 T. ~9 T2 Z2 _' t/ r1 p! j <statement sequence1>;0 s. \, J* k" V9 R) ?/ c# t) ~5 U
until <condition>;8 m4 _/ y8 ]& ]! B9 W* z
(4) for <condition> to <condition> loop
1 |7 }+ Y6 S4 g ^7 w, m3 ~. E+ A <statement sequence1>;) z& E$ g: B$ u0 V2 \. e
next;) z/ c4 v7 ^+ K& L
3中断语句. I+ c: z* S2 `
waituntil <condition> prio <integer expression>;+ ?0 w3 {) q4 M# W6 _3 v8 f9 O
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以上为常用的函数!& E0 J( a( i% b& v+ ?
还有很多,如有需要我把资料发到你邮箱里
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