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发表于 2012-11-13 08:48:12
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1判断语句
. j' |2 G8 } t if <condition> then
* p/ i) {- ~0 R" v5 l6 f) X <statement sequence1>;
( y. }# ~- \! O5 g, u3 V elseif <condition> then1 u& q9 I: n& ?) h" j# \3 u Q' U( K9 X
<statement sequence2>;
; n3 X* o2 L7 ]. V7 g else
& g t' b" S: @; I; S$ J* | <statement sequence3>;
" r% J& B. F9 { end;- w" M0 W2 h3 H7 v5 h9 y& q4 V
如果分支比较多，用：
: c$ U7 |9 b' C inspect <expression>
# L0 O* t6 `/ I when <constant_list> then
: d- R R, s7 ]" U <statement sequence1>;
0 o5 q6 n' R" g( T( h3 \# Z7 E' F when <constant_list> then
% ?- j- ^# k$ | <statement sequence2>;+ J2 \: R# P2 f# h4 [
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else
$ Y a9 t7 N, S3 n' Z7 s; b <statement sequence3>;
: `0 H) d0 ^# A" Aend;) t# j7 M3 m& d/ ^$ m; h- i
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2循环语句2 R& o+ ?% j6 Z+ q. C
(1) from <statement sequence1>% L2 s" C8 M- [* ], f; s
until <condition> loop$ H: H8 U$ E2 ?) {- ~
<statement sequence2>;
6 _( a! D( [$ Q, C; s end;4 ?; g& z; |/ Y) X, z
(2) while <condition> loop
# g" e$ P2 R! H. m8 H <statement sequence1>;8 ^8 v$ D2 A; l5 m2 y! L' o3 ]
end;* {/ T5 G. z }- G8 M9 P
(3) repeat
# l- I/ c! ?2 f9 e; q+ F5 [, o <statement sequence1>;
$ \: i2 D# V. B# i. t7 z until <condition>;2 S0 {: q3 d$ C6 X
(4) for <condition> to <condition> loop- B. L L$ R8 X( H
<statement sequence1>;
5 K0 P1 [, E8 f$ q5 C! h next;9 u% D; N3 t, Y! o: c& U7 B0 K( I2 c$ m
3中断语句
- L$ S4 L$ B# V2 V o' l9 K waituntil <condition> prio <integer expression>;
& e) v- Y' a/ m Y1 H. y$ R1 Q* l; J( T% D
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以上为常用的函数！
. r, x) [4 V" g/ M2 s9 o2 ^还有很多，如有需要我把资料发到你邮箱里 m' n, }( H7 H& @" f. ^
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