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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
" V2 ~+ j5 v, J! Y: q' {7 R if <condition> then
$ Z7 ?3 f$ D6 i4 g+ l8 i9 ? <statement sequence1>;0 E8 P7 T# x! M/ n7 m% m% F2 U! p
elseif <condition> then
9 E$ r9 i# a6 D, _ <statement sequence2>;2 A b' P; d* \$ J9 T4 R7 D
else / P! b) f! R0 F& f
<statement sequence3>;
( p1 F- h ~! u, O$ I/ D end;0 y6 E! \% r7 M6 @) c; Z& _+ h! }
如果分支比较多，用：
9 e4 H; H$ D" G# V inspect <expression>/ a- ?- S: m$ H
when <constant_list> then/ V" g, M2 a4 b8 T1 ~0 B
<statement sequence1>;
2 P7 N. [* w0 l3 l' _5 Q when <constant_list> then5 r& z8 |6 ^9 }, s* l* s
<statement sequence2>;8 i9 @$ r) N l7 J) o! y
...* ]3 a$ M. a5 H* B7 I
else. {4 `1 s7 W N; @% k8 l- V0 n, V
<statement sequence3>;
1 h0 a" I. p5 `* Cend;6 z* N. C4 |/ s( B% Z. l
, h/ Y- ]1 X3 s# v4 Y2循环语句
7 r% _3 g" p0 C4 C' \) S0 G* { (1) from <statement sequence1>2 K3 Q! A" q+ G. e) P5 O
until <condition> loop8 _+ S2 I: e. q; |( R. L
<statement sequence2>;9 k; H& I. V' `$ n% K! C! N$ z
end;' ?, F* {* X# A
(2) while <condition> loop8 P, v9 z) G$ W5 k7 _
<statement sequence1>;
+ x: k' \, @/ Y0 ?# _2 A3 r) F& M0 s end;" h+ H- \& ]7 h! j( ?' e+ z! Y9 U
(3) repeat
( M: I1 V4 f; P1 _1 B! q* X, d <statement sequence1>;: _* p% P) w# j; O
until <condition>;
- A a& e. x* v( b/ H# `3 M (4) for <condition> to <condition> loop3 V7 \: C+ B l9 o# Z
<statement sequence1>;
$ q5 Q- i7 a3 r0 O4 ~' }2 ? next;0 L" d3 j7 G4 Y8 v' i& s* W2 `
3中断语句
6 a% \7 m2 x4 O; Y' y waituntil <condition> prio <integer expression>;
& B @# P9 Y6 J1 k4 M1 V% J) o. H3 V4 z8 r6 p6 B
& q0 Y! ~! ?, H( S( d0 ~以上为常用的函数！
' A) a4 h* ]4 f+ _: B' h还有很多，如有需要我把资料发到你邮箱里 & x5 j: R* I# t) R: Q! \
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