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发表于 2012-11-13 08:48:12
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1判断语句0 s* c" Y, @' d/ K% f& ?9 v
if <condition> then
; G+ P0 P6 n) s# t$ [5 G <statement sequence1>;
) C% F: u# f$ ]& g( Z' Q- E+ I- | elseif <condition> then
, }8 H& p+ l" `* \3 b <statement sequence2>;
: H1 c$ l5 O, B2 f, h+ s, M2 L0 x else ( l3 J' N9 q1 ?/ e; p/ W
<statement sequence3>;% [1 n* P$ o/ m; H4 Z
end;9 v2 s2 i" |9 r1 N! Z5 q: s( ^
如果分支比较多，用：
# T0 W* h& B8 D# ?- c& o0 X inspect <expression>
7 ~! a8 P9 p% I6 @2 j when <constant_list> then' v1 R" M) ]6 W0 t$ f( s
<statement sequence1>;2 V' ?: {/ v- _2 v& J, E
when <constant_list> then! a+ |2 [3 g7 B( }
<statement sequence2>;# D: N, z" Y T& p" E3 b* D
...
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<statement sequence3>;
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2循环语句
% W& I9 w. S( {. d (1) from <statement sequence1>
+ a4 z2 U I$ P8 k$ h* L until <condition> loop
7 ]# `. ]( W9 O0 d8 i! _7 d <statement sequence2>;* \& E0 q7 _, y3 I) {
end;
) I: m% Y! ?5 T9 M: c0 t3 U (2) while <condition> loop
/ x: C ^0 P6 \4 B1 s <statement sequence1>;4 H" [* e3 ?* ]" ~0 G
end;
7 w2 i. x% F6 g& c& ^, ] D (3) repeat
0 g9 v; K" ^ @$ X* h! Q <statement sequence1>;
. G. c6 q X/ g1 W: H$ K' p until <condition>;
6 n/ X$ u$ g5 f S1 z1 a& t (4) for <condition> to <condition> loop( Z; H2 [( d" `% B, [; p1 e
<statement sequence1>;9 w7 ?8 N6 y$ D! `
next;
& X3 [( L5 x! y( P1 ^8 F3中断语句3 h* b( \; Z/ L: q! u8 _0 j$ r* L6 V
waituntil <condition> prio <integer expression>;2 Y i: C; l2 D
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以上为常用的函数！8 _" x/ u: V. A0 }8 k" {. L$ p' T
还有很多，如有需要我把资料发到你邮箱里 8 Z/ q8 R% @8 f- y. q
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