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发表于 2012-11-13 08:48:12
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1判断语句
" p6 ]! S& b9 e& P: f if <condition> then0 m" J- K8 }( H
<statement sequence1>; |8 v1 O4 X ^0 _) U) k' _3 s k, Z
elseif <condition> then
' y0 ^& B* z5 _) z7 \ <statement sequence2>;
* V9 ^$ e7 K* O else
! y4 r- j# P3 h1 M* V <statement sequence3>;5 n3 s) C o0 ~3 r
end;7 D0 L/ c. S! V* q: C: s
如果分支比较多，用：, m- y, p, P# O7 |# v
inspect <expression>, w- \4 w9 M! z& G/ }) h
when <constant_list> then0 Y; A, _9 G& d Y! S2 I
<statement sequence1>;3 ^/ S6 h, I' `; ?) G
when <constant_list> then
. N0 k: M" s6 L V <statement sequence2>;
! v: R! Q8 U# Y* ^5 R# u ...
2 \0 p8 L9 B v+ a" l* D# I else
& A! b9 j1 M# y* t# O <statement sequence3>;6 H2 ]1 S4 p4 M9 F4 ~
end;
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, E& W9 M4 e* S7 K1 o9 P/ ]2循环语句
- j1 n# i. d" Z6 k (1) from <statement sequence1>
( K @" X: y9 ?7 s2 A# g& ]6 i0 ] until <condition> loop
& ~0 |7 n: Z" m1 p <statement sequence2>;
2 Z6 s, Q J3 m! ~% s end;6 K4 V% ]; q* g4 {9 J0 B" F# S5 P! i4 Y
(2) while <condition> loop5 U' r/ J) m" c* V: Y* ]
<statement sequence1>;
. {/ l% G2 |- V4 B" H$ [! a, l1 i end;
5 q: Q* M& {3 Q d1 R (3) repeat
# N/ N; P% b) e! L" k! R5 j5 b <statement sequence1>;8 \# b* T0 ~" E& f) U: A
until <condition>;. H6 Q* i0 V9 `1 f/ t- Q# ?& G/ D+ O
(4) for <condition> to <condition> loop
8 N, {5 M# L$ E p <statement sequence1>;
4 ?# j5 \" F+ f" [; h! g' R/ c next;
: M6 e& z# Y1 r) `" R1 E# Q3中断语句# b' | f' ]. e4 A$ z
waituntil <condition> prio <integer expression>;; L" `$ b( [0 ]
) d+ G( A" j. ^* L* k) M' @! S8 K) r4 k
以上为常用的函数！
; }, j! ]! ^1 R' E* u2 R还有很多，如有需要我把资料发到你邮箱里
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