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发表于 2012-11-13 08:48:12
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1判断语句6 Y, Y0 o7 f( E- e# O$ I
if <condition> then# z' ^6 u& Q* g* ~1 c- {
<statement sequence1>;4 _" H9 f# F7 G# ^* T1 E! O
elseif <condition> then# M7 z6 g: f( T2 C- u
<statement sequence2>;. @" c# G6 Q Y8 T; z
else
7 W- [% k- W1 i! O+ d6 ]5 M <statement sequence3>;- J% A6 ~! X1 l7 _
end;$ f* a' q* Z/ o8 ?- v6 ?
如果分支比较多，用：
. [( F# T9 B6 J+ x: ~5 o" ~3 _: K inspect <expression>
* t" I. M/ ? y when <constant_list> then
; y5 G7 M" g6 i2 J: q3 P" E <statement sequence1>;
/ g3 L8 C1 S: @8 f$ K) p: f/ L when <constant_list> then$ ^( _6 l S2 K9 X m3 H8 C
<statement sequence2>;" o0 \4 R# r4 x C1 H' e; x
...9 E: K, L1 `* k( [- |0 J0 D# V$ s
else
' E/ f& T8 M( f: \# m7 G9 `" H <statement sequence3>;( ?, H! M/ o% ^: G/ y) O
end;$ W0 a. c7 K. j2 _( l8 C
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2循环语句7 m( Z$ g8 d1 r$ `
(1) from <statement sequence1>/ S2 N( A! I; n# o: c' G
until <condition> loop
- V$ D6 F' c6 O- B# g9 h* W5 a <statement sequence2>;$ |# [4 u! B5 `( B$ H
end;
( }/ F) h- E! l (2) while <condition> loop
8 i" f% ?9 i% n9 a5 j) s <statement sequence1>;
! P6 y' K9 Q" U& {! z, H end;
( n% b# w: y m7 ] (3) repeat
1 i3 r+ ^) y! h& J0 w4 M: [ b7 h! E <statement sequence1>;" u5 w6 ]- O% q# a$ i4 T; p/ C" y
until <condition>;* G, o) u" u* I" z: S9 \
(4) for <condition> to <condition> loop
9 R) n8 y. m% ? h4 r" f' W4 t <statement sequence1>;
$ y% E& R1 S' i F5 G next; n! u9 I0 m7 [
3中断语句4 n5 D8 e" f# B3 X/ }! z# I2 \
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
k, H }8 v D" L* {7 f' B. c还有很多，如有需要我把资料发到你邮箱里 $ A* ~9 d$ M5 {; |$ g# S3 C
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