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发表于 2012-11-13 08:48:12
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1判断语句
* Z5 a+ E/ j- W' r7 K8 | if <condition> then0 c- l# q" Q/ r# ^* W- H
<statement sequence1>;+ A2 ?% H9 X9 E
elseif <condition> then1 E5 y/ t5 ^1 x7 |* h% `5 O1 Y' _
<statement sequence2>;
0 C6 P6 | L& C3 v else
, w7 |8 c b$ Q; y A3 D, U! w9 H7 e <statement sequence3>;
* m5 k# N! X( E1 `) L- @ end;
! g/ t5 L$ n* c/ w( `9 _3 R如果分支比较多，用：7 M) [ U. x _( c! z! a
inspect <expression>, u- E' d0 L3 Y- {" y1 [! [, |
when <constant_list> then7 j5 H: ]: ^0 G+ u; @; {3 e
<statement sequence1>;
9 P6 a2 S9 _$ X4 Y when <constant_list> then
5 A* }! z! h$ K. y4 w1 B( S1 T- E <statement sequence2>;
) o0 ~7 n1 \* @" O( G" ~' |6 m; Z. S ...
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<statement sequence3>;
: k) z. U8 K& {) `; H, Fend;
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! z; U& |5 Y% H5 J# S7 L o2循环语句: I: a4 V$ _0 {' ?: J7 c
(1) from <statement sequence1>, M3 x# B, p1 G# g3 m, p, y
until <condition> loop' b1 u6 B. ?) _9 Q" d8 b
<statement sequence2>;' @/ n, ^ U I
end;
8 p' C H5 Z/ C* U: T4 R7 A (2) while <condition> loop7 o+ N8 Q2 Z- [2 h1 x1 Z
<statement sequence1>;, \( r# E7 P" `. K5 i4 j% e0 Y) h, O
end;- D8 b- j$ u0 q5 A
(3) repeat 9 F/ w. y- S+ H2 [, I
<statement sequence1>;& F3 {6 A9 @; t! e; V
until <condition>;
: U* V" h5 [8 N& r (4) for <condition> to <condition> loop
6 t) b$ v# r8 k; G( i( i! @) M <statement sequence1>;, u0 Z: H4 Y; j/ v: Q( m
next;
1 Y# E+ l, p, g8 q) V h8 d3中断语句
9 G' w( s+ S0 l: l! |# C waituntil <condition> prio <integer expression>;
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/ D+ i% M7 C5 S* q) x, C0 i- ~以上为常用的函数！/ O9 u3 f% n. F0 j
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