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发表于 2012-11-13 08:48:12
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1判断语句
: K4 P4 ^- @, C6 j- r if <condition> then6 R2 @3 V5 n0 ?6 r( Y
<statement sequence1>;+ | x" {5 W# a; Z
elseif <condition> then, s3 e2 W: U% ?+ Z" t+ T5 {
<statement sequence2>;4 h" {+ A. \6 e- G4 u; P1 y: u- m
else & Y9 }3 A* Q3 _- y3 H5 n$ @2 c* f" X
<statement sequence3>;7 X' ]3 g& @2 B3 d0 F1 w: d
end;2 w8 N2 m9 @3 d! d
如果分支比较多，用：
r* ]2 s" x* g, J. }9 m9 \/ E; [ inspect <expression>" Q3 A" l$ z: j' Y. Z& x4 ^( `$ x
when <constant_list> then
7 e5 y, j! X9 Y5 _2 u <statement sequence1>;4 a# \1 E0 T& V+ C; e, A# ^% A
when <constant_list> then. B( D. J; T8 p6 Z9 `( t
<statement sequence2>;
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else' r8 M5 I3 z# G
<statement sequence3>;
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1 j' _& Q' W( O! I# L2 ?2循环语句
$ O- p8 r. z6 h& j, }- d5 S- I; q (1) from <statement sequence1>
+ J& P" {! k+ i until <condition> loop' _! \) q, Q( U( ]2 h
<statement sequence2>;
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(2) while <condition> loop
k8 A" X* d6 B. A C0 c <statement sequence1>;6 h2 ]' H$ v( \( j! _" n
end;
. j) c! T$ D8 t7 b4 K+ `' [ (3) repeat
# C2 c) y( V. M; C6 H& @7 g6 a <statement sequence1>;8 m+ U$ t: T' ?/ f3 \
until <condition>;
( Y! Q- F v0 L. A. k6 D (4) for <condition> to <condition> loop
& R' q- [' t; B/ S3 P5 J+ g8 f <statement sequence1>;5 P. e! B* `' A, [' _! k
next;
; ]5 k5 X( ?% e6 u Y3中断语句* z) q$ I2 U% P$ _' `
waituntil <condition> prio <integer expression>;+ z8 O" w( _+ c, j3 F% j
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0 A( Z3 n* B/ L) N1 n( ^$ L以上为常用的函数！
* |8 |& r5 w0 ?4 }* [3 J+ r/ r; Q还有很多，如有需要我把资料发到你邮箱里 , f. M: |- F" E
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