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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
9 Q) J/ z+ q$ p& v) N if <condition> then. {0 I, C8 p* Y% y/ s- e' _
<statement sequence1>;
7 q4 |3 N) A7 K2 w5 d g6 ?0 D elseif <condition> then2 ?- P6 R& U M! M6 G
<statement sequence2>;8 c$ v# t# f* D' c, O! M
else
3 l/ U, Z( t4 ~' r) ~ <statement sequence3>;7 C) t& B% S+ L4 ^, b/ @: P9 @
end;: q/ z" i& R( `# r5 x% K
如果分支比较多，用：: ^$ [) h# x l/ r, T
inspect <expression>
( {# s- x2 D! w0 W) |! q. } when <constant_list> then
* q+ o! Z6 y3 B+ ` <statement sequence1>;& H1 ]$ o( H! B* ~9 c) w
when <constant_list> then
6 O2 r! D( Z# D! |, y7 W$ k <statement sequence2>;9 ^* j- q# M/ C
...
: L" q) e9 n( f$ D& r4 P else
6 l6 X3 z3 P$ d& x9 P <statement sequence3>;- v) E. E- ]' C7 Z! h
end;
7 Z# |1 R/ c+ B( r& w, F5 H5 b M9 p$ n+ Y9 W6 a+ a. {, G3 A
2循环语句5 ]5 K% R+ k$ `9 L- h3 G6 U" V
(1) from <statement sequence1>. y% J% Q% D9 i9 A. y+ c4 Z
until <condition> loop; V. I) d7 Z5 M# J, M" k, L* V
<statement sequence2>;3 `9 s d0 b4 ~
end;
$ c/ C. T9 J2 F, X+ B- A; C) ] (2) while <condition> loop
7 I; b, c' F4 I \7 v9 s7 X <statement sequence1>;3 Q( N; h6 g5 Y3 U( L
end;
, V$ F5 y* ]& J3 o- a (3) repeat
. j2 K/ c D6 G4 \2 R <statement sequence1>;0 v( }5 z2 `6 X1 i3 |; B
until <condition>;
0 W) [$ ~$ _2 r9 n+ `7 D (4) for <condition> to <condition> loop
: n4 A1 q3 i6 Y- Y- Q$ O+ g! D <statement sequence1>;
8 x5 n4 _! T8 l. ]7 m( ] next;( s) D5 ?8 o) J/ a
3中断语句/ i% y3 ?0 p' @: H& s
waituntil <condition> prio <integer expression>;
: s ~. f+ L$ k- u6 Y s9 J$ H0 l* ?6 `; @& O; ^; w+ {; i
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以上为常用的函数！
$ _8 I+ @# V; {3 a# L. \, v7 o还有很多，如有需要我把资料发到你邮箱里 " W5 C$ K6 g8 P8 I5 Q- c; x7 [4 v
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[- `1 x& {! |2 u3 [0 c2 S1 s- ^# Z
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