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发表于 2012-11-13 08:48:12
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1判断语句$ c# U9 z$ J" B6 B7 V2 g3 [
if <condition> then
. r& Y6 `1 W9 l) y <statement sequence1>;
! p: F% l7 _6 J' I1 e elseif <condition> then) o) I. z/ u7 I7 N7 N( I R" @
<statement sequence2>;( y: Q. X* A1 R) E5 A! ^ v. R$ j
else " I2 e `0 V. b! v4 i1 A3 h
<statement sequence3>;* L0 v( B: Z, x Z0 X0 W
end;
4 P# S! j9 v4 l6 l如果分支比较多，用：6 `% R. \. h2 j0 ^& K7 E
inspect <expression>
, }# J% L# o" X" J/ R, R: p when <constant_list> then
: [ v" ~, P! _0 j% p <statement sequence1>;
$ W! a/ f: Y& h" t0 h( r* u when <constant_list> then
+ P5 K3 x* ~, W/ h <statement sequence2>;
! k+ c% |3 ^) G' x; K$ R/ q) O4 } ...
4 o* R; {% v! J else
$ y# |! E8 n( K3 @& r5 m. M <statement sequence3>;. N, x5 ?' l) `
end;$ s. k, ]$ U( x, X k' A
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2循环语句
% w7 D8 O, z& L- v- t* \) K! e$ w1 C (1) from <statement sequence1>3 e0 ~! d7 a- A: p! ~
until <condition> loop' O! k) L D2 h$ V) q( G# v
<statement sequence2>;5 @* M' e- @+ G) R
end;( L& M" k+ `- L- A$ |
(2) while <condition> loop
8 T% t {) B8 Y! r# b <statement sequence1>;2 _9 Z d+ }. |* s: D
end;; L7 b6 F9 b! S2 q) q+ e5 G2 W
(3) repeat
( ?+ h: O+ j2 s' H5 A <statement sequence1>;3 J+ y) i' Y8 U: ~/ {! ~. O
until <condition>;' \5 {9 h: |" H( H
(4) for <condition> to <condition> loop
( w9 j# }9 Z8 c- [$ S% Y; k% k. y, D <statement sequence1>;3 J* |& Y+ e& }8 b, n
next;( @5 o) d9 U- a9 ]( K) r
3中断语句
' {5 Q, p* k+ ]1 c0 T waituntil <condition> prio <integer expression>;
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/ U, G1 Q" K; R& l以上为常用的函数！, v$ N* O- x" ^3 B7 k" o2 R* ?) N
还有很多，如有需要我把资料发到你邮箱里 4 i: T$ i- C; {) Z/ m
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