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发表于 2012-11-13 08:48:12
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1判断语句7 o6 z6 I5 _; X# ^
if <condition> then$ l7 k. S5 j& I0 ?; Q! D
<statement sequence1>;
2 s3 Z+ v8 ]7 u5 W elseif <condition> then* F, r7 b3 ~, k! p. ~8 y- l
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
+ H& z4 v: B. | inspect <expression>7 n9 W# a6 F; u6 b
when <constant_list> then# ~/ U1 A7 ]8 i# u0 {
<statement sequence1>;, w+ u V1 S- ]) Q- m
when <constant_list> then
- f) ~ f4 O- ]' u4 ^# d- ?7 f <statement sequence2>;
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else
7 r. q2 @+ O Z <statement sequence3>;& [# U0 s/ u m$ X6 e1 D- ^
end;8 W' R# C' r' v5 u+ E
3 W2 X, `/ A3 t" G' |9 W% x2循环语句
! F; \* P8 K# w, k& Z (1) from <statement sequence1>2 \- D& \) e- t
until <condition> loop
2 y& @5 y* [8 W! t/ i, F) j <statement sequence2>;1 i. j4 i/ s/ D9 {: o
end;, s6 R! ~. ^* C! W0 z' A
(2) while <condition> loop
V& ?1 d, _) r3 g7 t u <statement sequence1>;
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(3) repeat
4 q8 s: t8 G# x$ o4 B, F. J8 e <statement sequence1>;2 ]6 u2 j5 T! _6 f, |. c
until <condition>;
& N3 ^& t, Q% I y- ]( V (4) for <condition> to <condition> loop
/ ^# ?2 ^3 S2 Z2 _. X: u+ p <statement sequence1>;
" Z! K* @" d# N$ U$ q# y next;
1 _ a' ^2 m$ e; Y! b& p8 s3中断语句
# x H4 ~4 T4 C waituntil <condition> prio <integer expression>;
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以上为常用的函数！; C) ?# T# c6 b5 X1 o" j
还有很多，如有需要我把资料发到你邮箱里 , x1 a# j& ?( o/ R: i; W
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