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发表于 2012-11-13 08:48:12
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1判断语句
( n) ^# `7 `6 j3 R" Z if <condition> then. M5 A/ {7 l r9 H
<statement sequence1>;0 B5 S, Z: s6 _
elseif <condition> then
6 ^- |- ?- v( { <statement sequence2>;
# o# J# i j) k, a else
2 p6 ]9 v, j, a. U$ W- |1 V <statement sequence3>;
- i2 p% \8 w/ g' s) { end;
. D# I7 t D+ s- c9 G( l7 y* }如果分支比较多，用：
; c! I6 U' ^* B. d2 w* H* \, M inspect <expression>
" p4 l- ]! V3 Y+ \2 T when <constant_list> then
, T7 F- J/ _0 Z5 G <statement sequence1>;7 V2 ]# O7 [/ Z$ e& @
when <constant_list> then
" _4 e; Q7 M. @ <statement sequence2>;
# B4 W$ R- N/ o5 |, R ...
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<statement sequence3>;5 i) Q# N* h& u, A& ?8 S
end;
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5 j/ Y/ [ s& ]; v$ L& Q) U2循环语句( ]7 C" k; u* Q6 v' G+ u- [
(1) from <statement sequence1>$ l' v9 b7 w I$ c5 o
until <condition> loop
6 o7 | g9 @' z' C% p$ f5 p <statement sequence2>;
* K' n, ]6 d" [. m6 o' l$ Q/ [ end;
/ K# D- g: c* J9 A# s8 Q* O, K (2) while <condition> loop
" Y+ t. X; I' N7 }1 p) K2 y$ j. ] <statement sequence1>;8 [) G0 Q0 A, v4 X6 h0 Q: \ J
end;9 J2 s2 q( o8 D
(3) repeat 3 f# A, t8 x+ A; G3 ?. N. b
<statement sequence1>;! \4 b6 \9 O- m% X; t
until <condition>;6 Q' F4 P' A' p& I% A+ I7 ~
(4) for <condition> to <condition> loop
3 Y9 j9 w! j/ x5 z ?7 S. @- p) c <statement sequence1>;: ]; T7 H' m/ y( C, s5 m3 v% [
next;
& m) e5 B7 P4 M$ `5 I3中断语句* ]. `& d+ F. @9 V
waituntil <condition> prio <integer expression>;
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2 ~8 U, R6 J0 w, D- r; r1 u1 Y
/ ^4 Y7 Q- B) E. R' u Q8 M1 k& s以上为常用的函数！& G# g9 x( V' C" V4 d- a5 ]
还有很多，如有需要我把资料发到你邮箱里 6 N: P% y; Q5 I& O# K7 G
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