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发表于 2012-11-13 08:48:12
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1判断语句+ g( F4 S: s; e- H W' G7 T
if <condition> then, K/ q: l" X5 n/ Q' d
<statement sequence1>;
4 E* X" R l) Z* D$ R# I2 \ elseif <condition> then j I+ e$ I2 @: ~
<statement sequence2>;
5 k) }" Q5 W& s0 X% h5 Q else
4 t$ Z. p0 P/ X' g1 }! ? R& ? <statement sequence3>;; L, ?6 P- f$ Y; W( J' b
end;
$ W$ c. p; }( u4 l, r4 D e如果分支比较多，用：
* f& Q1 K! R+ R! s% F: u inspect <expression>
! b8 w K& Y3 P5 P: C when <constant_list> then
# ? O# X7 B- W. H r$ |% A9 V <statement sequence1>;, O8 J- @9 @; b6 `5 z7 p( V
when <constant_list> then7 w5 ]. J/ m) | R8 _
<statement sequence2>;: F& j. A; \; e4 J
...
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<statement sequence3>;1 M, I3 ?, Y- Q) [8 B2 v
end;
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2循环语句- t; i. ~! g }1 c- ^$ e0 V
(1) from <statement sequence1>
- c# ~6 ]* Q1 n) A/ Y until <condition> loop
# O2 M6 L/ s1 p' w6 c <statement sequence2>;6 ]; g1 z6 Y! [" e
end;/ [: P2 w n+ Y1 ^% v
(2) while <condition> loop h. A3 r$ x+ |/ ^6 x
<statement sequence1>;" P$ l' n, U5 p7 a% \ H
end;
2 H) F7 O) w9 }! H* t* u (3) repeat
" i$ [& U- X1 G' D+ C: V <statement sequence1>;! ]+ I! y5 }# @8 A
until <condition>;
( t: I% I4 P7 C ?3 N (4) for <condition> to <condition> loop y4 a7 M' X4 t" h1 L; g% r( P
<statement sequence1>;" g" Y4 [# y7 R2 v9 c. H
next;
2 J. h9 s$ d$ @ O+ q4 S2 |" V3中断语句
3 b8 J, S3 o* ]$ s( T2 u waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 r& G9 q3 \6 s8 T0 n( k还有很多，如有需要我把资料发到你邮箱里 ( N9 V1 x/ N, ^7 t
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