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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
( V L3 V- s) ?0 {$ l2 Q0 u" f if <condition> then) _% v! p" w# Q# ~5 s* j0 u3 m
<statement sequence1>;- Z1 A* Q7 W! d" x; y+ Q7 u1 X
elseif <condition> then3 |+ t1 V* o; P3 K
<statement sequence2>;
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<statement sequence3>;
x o0 \4 z9 `9 f+ l( o end;
* x# L% O! }. s* P) J如果分支比较多，用：
; L5 m, ?. z& h) `3 Q& g8 D9 \ inspect <expression>3 P' e5 R1 ]8 E, M$ m6 K, j# A5 a
when <constant_list> then: A! w6 i" V/ K- o
<statement sequence1>;
; D/ |3 V6 Z" g: M! R8 M2 d when <constant_list> then/ f. {& a) p/ h" Q2 G) u
<statement sequence2>;
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else
8 J4 }8 U" ]) `+ d <statement sequence3>; k) f& h# j# c {7 v
end;
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2循环语句
" H2 n* d' v' X (1) from <statement sequence1>
& _. h: Y {4 ?! S1 `3 P until <condition> loop# z( x D9 L5 [- L, d' r
<statement sequence2>;& q, B! t/ N3 h& n
end;
1 y! q" L" P, F1 Q( d, ] (2) while <condition> loop
1 r- ?& a, n( k# P+ I2 ]- G <statement sequence1>;
* X: b1 Z$ O$ j* O6 _1 B end;
: S0 l: y9 G% x2 p2 M (3) repeat
, L0 b" L# b2 m2 p; d <statement sequence1>;
3 x" D5 T3 }# n" j9 S until <condition>;
% _, f" q! v, t1 ]% d3 q (4) for <condition> to <condition> loop
" C# C1 b1 r5 J" `5 Y! G' c <statement sequence1>;1 U6 g ^4 i, L( o9 w3 G
next;
, V% d8 b# I$ r( A. @% C- P$ C3中断语句
$ M7 @4 s/ i3 D& u \ D1 T6 G waituntil <condition> prio <integer expression>;
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: s, T. L) @% V B以上为常用的函数！) h6 }5 R/ D& Y2 q
还有很多，如有需要我把资料发到你邮箱里 . y( d# b# B8 ^: D# a; _
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