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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
2 \ r) X" C. X2 e8 T if <condition> then4 S0 Y: B; c4 R4 h2 o5 A! d! Z5 u
<statement sequence1>;3 w( _: ]% K8 A, I
elseif <condition> then$ G$ \/ g4 S+ J( g4 F* f. O8 P
<statement sequence2>;
0 @; }) x; | L2 Z- ~4 e. \- @ else
4 \' C7 k: s0 t/ A y ? <statement sequence3>;. |$ ?9 j! a- x& Q! ~/ R( T4 @2 k# d
end;
. B7 u- D6 D3 k' ] U4 K如果分支比较多，用：
. `6 c7 p$ b4 u- c' U! Y! L4 R inspect <expression>
, ]" S3 b! H2 F) Z when <constant_list> then
) P0 P( H; U' p% F <statement sequence1>;
8 U9 e# W6 S; y5 i% h3 Y4 i2 z when <constant_list> then( C. \: V: i; m5 a8 @
<statement sequence2>;6 o1 G5 T; O+ F# L# Q' n$ w
...
6 T+ ?: U, V8 L5 \ else
$ K) H% I$ \3 ^+ t! n6 C3 V <statement sequence3>;
" }$ ]5 g7 ]; d' D# ?end;+ \9 t2 p& X+ g+ Q" X. _
# `6 J U- W- M2 Q6 V; r, g. @
2循环语句: L) z0 F D6 N$ l
(1) from <statement sequence1>
* L! a6 e/ c ~7 W A2 E7 C) m1 K until <condition> loop. C( \+ g+ n V- }1 c" w
<statement sequence2>;4 D" g1 I7 N$ j! [3 ~3 A* i9 w
end;
# H; U/ x: S5 @& z (2) while <condition> loop% ^9 U: ^) t" K5 Z3 v
<statement sequence1>;
$ O- a2 u2 m5 R& w# \* l end;
5 L# g' r- |+ ^8 u& W& N (3) repeat
0 h2 [ p3 f! y <statement sequence1>;
3 r. t8 L$ B1 Z" W/ c until <condition>;/ Q V( p2 Y! h9 B
(4) for <condition> to <condition> loop
' N' m* H/ ]4 T/ H6 Y& v <statement sequence1>;+ ^; A% s% ?$ |- j9 z) _
next;
% M& f" ]9 [7 x2 }1 V& o* ]3中断语句& m( E- A6 @$ h$ t Z; k0 }
waituntil <condition> prio <integer expression>;/ W, i2 G P! W# s- R: S
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以上为常用的函数！5 c5 K$ y% R7 J( j* i: A
还有很多，如有需要我把资料发到你邮箱里 2 x5 L1 T) n U' @9 j% D- e0 ?: |
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