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发表于 2012-11-13 08:48:12
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1判断语句
' I9 l# W# N/ ^7 P7 ` if <condition> then3 R+ E0 j' K" P) b* w
<statement sequence1>;
& O* C1 U: i8 O2 x$ w elseif <condition> then
8 ]; w- I- s$ P$ X8 e. l* R <statement sequence2>;! d9 ^ Z: K4 O8 a2 M& I7 L6 N
else * v& G7 D7 N7 ]: g
<statement sequence3>;" e4 M( {6 C9 G
end;1 V+ e* J* ~0 \7 j
如果分支比较多，用：
_; P% u* {& @9 s* O" s/ ^3 O inspect <expression>6 y0 X& P# B7 j2 y. K
when <constant_list> then' o0 v0 g" \& @4 k8 i
<statement sequence1>;
' \* f7 _2 I$ h( _' j2 C" c# ? when <constant_list> then% M: j0 ^6 A% t
<statement sequence2>;0 e; N& N- w$ H+ P
...; b% ]0 p& W: N7 _
else: F0 `+ E& ^: R5 ?
<statement sequence3>;
5 G3 U! i% L6 s$ _end;4 r; s- H# e4 r. {. j; r
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2循环语句
5 o) O7 G" r- B7 D8 h (1) from <statement sequence1>1 ~9 h" g9 A: ]( E2 c
until <condition> loop
* k k1 u& m4 P7 w( @* K% U1 ? <statement sequence2>;& g! X( c& L; B% D! @. W6 t
end;+ Q i, X& h5 o* D5 {3 c! j3 J
(2) while <condition> loop- P8 m6 k# O: _1 ^' f1 V2 g
<statement sequence1>;
4 ^% e' O9 e; b6 k; ^ end;
" C7 D) g) _* B5 Z) G (3) repeat 8 ^6 B$ n2 {5 Q& m; _2 V
<statement sequence1>;
3 M9 ~" j3 a3 _( P$ J% S, m9 y' t until <condition>;1 Z( C7 K8 E) Y) @3 x0 n6 M" n* ?% o" [
(4) for <condition> to <condition> loop3 J e" W8 B- M
<statement sequence1>;
0 [' E) U* h3 ]* Y# s next;
]! X& b) t. |$ \8 _$ p; t8 A3中断语句
# H8 u4 w; E% G9 e! F% x) `4 M waituntil <condition> prio <integer expression>;2 Q4 R2 J4 Y. f f) a. ~8 ?! A. }
9 ~: p1 d* E b, k5 V* L
( N8 w1 ]1 K! c5 H以上为常用的函数！! O% j4 o6 `+ T+ z
还有很多，如有需要我把资料发到你邮箱里 7 d, T* F7 Z5 Z, r7 F+ i6 d- I
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