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发表于 2012-11-13 08:48:12
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1判断语句$ L, {& V {! B1 i
if <condition> then
6 q: ]( v+ ]9 Q <statement sequence1>;
( \+ s j) F- R8 I elseif <condition> then
& |# I& T" P/ u6 G+ B2 H$ I <statement sequence2>;' C; a0 W% l0 h k( s
else
/ q0 Y0 g1 A- n <statement sequence3>;
- m# i3 F2 B0 q1 H; C end;
- `, J: t3 ]# T5 y" d7 {, f如果分支比较多,用:
9 F0 Q v' H$ y/ d$ g inspect <expression>
8 k* r+ N5 n7 w5 ]* r; h+ n3 k when <constant_list> then" v7 b1 G, r6 `( `' ]# R
<statement sequence1>;
( A. i! `9 i+ ]5 I& s when <constant_list> then% N' [8 D# G" n; z' c2 ]0 @
<statement sequence2>;" ~ f4 R4 _4 I0 m
...
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<statement sequence3>;
2 F" s( ~) ^* [4 R! Iend;
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2循环语句1 A" U. ], ?6 A0 C- `
(1) from <statement sequence1># L: d. f; C) J; K" k% u1 {
until <condition> loop
3 E4 q5 {6 j* K3 z7 T' c <statement sequence2>;5 Z0 ?9 g- J ^& P
end;+ ?& a# q$ D1 K$ \
(2) while <condition> loop/ u! }0 E0 u, k7 p+ v2 j6 w
<statement sequence1>;5 ?" o6 F3 { C
end;. C0 T' c: y* u: n5 R K: ]! t
(3) repeat
7 O% d7 }( @8 ]$ i <statement sequence1>;+ b. I5 D" T- [. H1 m
until <condition>;% f) E: X/ g7 ]0 u
(4) for <condition> to <condition> loop% S4 ^' @7 [ u" {) o2 d
<statement sequence1>;+ B1 M6 m; y: g% x8 e0 K# \/ u
next;
6 q+ M% o& K- e7 }/ |* e0 Z1 S3中断语句
9 B, B7 F# r5 s4 c$ e" Z waituntil <condition> prio <integer expression>;+ W" \+ k! ?4 y4 m/ D& c! \7 u
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2 B z- ^' g3 q2 M z F( M以上为常用的函数!
0 v. P& Y( C+ Y4 |. K% }" ^: [还有很多,如有需要我把资料发到你邮箱里
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