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发表于 2012-11-13 08:48:12
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1判断语句9 M3 U$ g0 U% `. `( m1 W
if <condition> then
6 R2 B, x2 C/ c' i' b <statement sequence1>;. a" F! M: }* \, u6 _/ p
elseif <condition> then
5 }! d. R& W5 y6 D- Z# T <statement sequence2>;- e8 ?! p6 l: Y- _# d) Z% _8 l* s6 m
else
" b! t) _4 B/ j$ F; _* Z m7 l <statement sequence3>;+ F3 U5 E: Y( w6 [: Z& x, x8 v
end;1 z/ t0 A7 U9 s$ o7 h
如果分支比较多，用：" c- @; }8 h( n. e/ h% J- h" Z
inspect <expression>" t# b) Y& E5 ]( T; E# w) p% H# A
when <constant_list> then" {! D$ c+ X" V5 @
<statement sequence1>;
8 e1 C- V4 s3 l6 {8 y/ O when <constant_list> then% A* z8 p' i; \
<statement sequence2>;
+ F' y7 Q/ O/ i+ q5 |# t$ {* u p ...4 l! z# J/ {7 s+ c. V
else
- N$ Q/ l! M: X <statement sequence3>;
# N, E8 f9 ~$ [$ qend;
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2循环语句: C( s5 L* q/ m/ b C2 c
(1) from <statement sequence1>7 L# O8 w: S2 F% L9 J/ J
until <condition> loop
- D& M$ r3 C' q% G/ |7 m6 h <statement sequence2>; e4 n' q6 t) G; V' a( ]
end;
+ ^: z% `. d/ Z# C3 {% Y' L (2) while <condition> loop; B$ v' F5 w0 r- m; L! X/ z9 F9 U1 o
<statement sequence1>;# A+ X) A+ {2 _( @% [2 `9 j
end;
! R# U. Z: ]" w (3) repeat 7 x8 z4 N* z0 Z0 ~0 N
<statement sequence1>;& a! r1 l# t+ m# M$ x
until <condition>;
$ a( I1 ?/ {* p' n+ A' w9 k (4) for <condition> to <condition> loop
$ l( K3 q) b) F7 a+ q+ f <statement sequence1>;0 c; _/ ~9 O0 m
next;; O7 R6 ^; H4 o4 D4 y; t4 U' B- u9 b
3中断语句" e1 ]. f* P% @& O5 Z; l6 l6 `
waituntil <condition> prio <integer expression>;) a, L% R5 E' p t
* a, t" ? ?8 ~/ K' N. U( p; N" r: E1 f3 U
以上为常用的函数！
; x5 V! J5 `5 H( p/ Z( m0 ]% f6 s还有很多，如有需要我把资料发到你邮箱里
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