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发表于 2012-11-13 08:48:12
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1判断语句0 |6 p7 s& p4 \' g* z5 P1 O
if <condition> then P7 K9 Y+ m- E% u. A
<statement sequence1>;7 x: v; v8 _( C8 G
elseif <condition> then
, d. d/ n2 G# I <statement sequence2>;3 p: x7 P7 r6 L; k7 o2 k
else " O% P$ j8 o0 s+ a
<statement sequence3>;8 O/ _" K0 x7 t; `0 a: }" ]
end;7 x3 y6 E- `4 F& \
如果分支比较多，用：
' k |2 n# _$ `0 L6 d' S inspect <expression>8 b( r( d7 e: D( n2 F
when <constant_list> then3 h4 h+ R" `3 U8 a
<statement sequence1>;, i. Z9 Y) f8 y0 D6 L
when <constant_list> then: A2 W3 F! ^6 k6 {
<statement sequence2>;
4 f6 v( B8 k" \. E3 j$ r! ] ...
* W2 C. L! O+ M! C `( Q0 _6 A3 Q else
; T' }+ {& J' G) C' a1 d <statement sequence3>;, Z$ }5 a+ Q- h: ]$ d
end;
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# [) a: Y: E7 m/ E& \; ^$ k8 A2循环语句
; N; n2 F# P4 c. E3 j B1 r (1) from <statement sequence1>/ ?! Y& s9 P8 q9 j
until <condition> loop
* s" |; r D1 `8 o d9 r <statement sequence2>;
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(2) while <condition> loop1 e. h' X' R& Z8 h, h: w9 \
<statement sequence1>;
$ C5 F' N8 p8 h6 ^: ?+ `& T8 s end;
, I8 ~4 B* z5 v3 L5 j9 N (3) repeat
3 R' h& L! u4 s! j3 X: K <statement sequence1>;/ r/ ]- a4 Y* ?; Y
until <condition>;) O0 P0 I1 u. e `1 X( {
(4) for <condition> to <condition> loop
6 A. J% }/ O. J1 d <statement sequence1>;. Y# \. r- e# W: ~
next;
' Z+ R* z7 D# @8 ^5 e' U3中断语句3 X9 H$ f6 ?. R9 q8 P
waituntil <condition> prio <integer expression>;
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4 |* W% u# b6 W0 S+ F& j- h以上为常用的函数！
) t% D2 p/ Z3 J6 O+ s; D( |+ s# C1 z还有很多，如有需要我把资料发到你邮箱里 5 z' _$ L# M& X; c( A; G9 R
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