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发表于 2012-11-13 08:48:12
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1判断语句6 s- N$ W/ P: s! L/ `1 W
if <condition> then
" z) m8 b# }1 P1 q) c <statement sequence1>;
6 a$ B2 Y/ A! ?( ?% T7 s elseif <condition> then
- ^ M: d* c( h: N. V7 X% ]$ I <statement sequence2>;1 |0 r' N' e/ _
else ! w& F1 h1 _4 h! y( x' ]
<statement sequence3>;
# C. i2 Q2 {. p3 w R* Y J2 m. o end;, b# v y( r! A
如果分支比较多，用：
0 B3 _& j. w$ K, n# I' b inspect <expression>
+ c% B3 b: ~ ~$ M when <constant_list> then
* l: d( W5 i9 y( ~8 v$ a <statement sequence1>;. \: l: w/ L* @9 c) ~9 o; _5 Q
when <constant_list> then; @7 Z( m' t7 S* \9 p/ K9 V
<statement sequence2>;
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else! I: [# i8 Y' T2 q4 ]! C) G' ?1 C
<statement sequence3>;4 T5 I; G- a- o/ u. ?. X
end;, {$ z/ a. c' K. T! I; A
9 A9 b+ c" y* F0 }: ]: T1 y2循环语句
2 y- f4 G- ^0 K8 K! e( |6 g (1) from <statement sequence1>
* G: S' X4 z# w until <condition> loop) L2 M+ ~/ z" x$ N8 M
<statement sequence2>;5 z& k; X6 R+ ]3 \4 e
end; _! ^& p s H
(2) while <condition> loop
; T/ }6 y) t$ l0 }0 `; i <statement sequence1>;9 d- I" f+ Y5 [; k; t
end;" ~5 g/ T1 M6 F# n6 o
(3) repeat
. @* l$ w! o! v. d- q( R <statement sequence1>;
; N p6 h$ i: D+ L until <condition>;
; R% M. u! F1 Z4 h7 B9 Z& q% W (4) for <condition> to <condition> loop
: I6 _# X/ R) A& M$ Z A3 w \ <statement sequence1>;0 M3 |' M3 R' `7 J O
next;
" l; @/ {. K" Q. O6 P, P3中断语句
0 @ c: Q* [" I2 d; A0 B1 n waituntil <condition> prio <integer expression>;( L K2 H4 I9 m8 H4 Y( b& e
7 I H1 u. M' B+ E7 x4 G3 \: k) v$ W7 W% _) `/ q I3 J R2 Q% g
以上为常用的函数！4 j* {' x$ A) ~1 _3 a0 G; u
还有很多，如有需要我把资料发到你邮箱里
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