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发表于 2012-11-13 08:48:12
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1判断语句6 |4 @) t/ O, [1 @( W5 n! u
if <condition> then
- U4 {7 v l3 E M <statement sequence1>;
( x. T7 g9 i* ?$ d7 c6 D elseif <condition> then" R9 C/ m6 y/ W6 n z/ U9 c0 A
<statement sequence2>;
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<statement sequence3>;% J" s5 a4 L# E( X! S) z5 L
end;/ m! @! V% [0 j9 f) |1 ~8 Q
如果分支比较多，用：/ C8 e: [! D4 ^% D
inspect <expression># O; [& q. c' q, i) b
when <constant_list> then% K: `7 d! s+ M' X9 g
<statement sequence1>;& x' t. a) Y% U# |! t
when <constant_list> then( \5 }. r& u8 E# {% ]0 c* ]9 M& M. m
<statement sequence2>;; z1 K0 a' K% |! U' k( d+ e
...
- W7 x' e% T3 E) b' x else
7 y& T; t/ k0 u <statement sequence3>;
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2循环语句! e7 |' y E, B* Y9 N
(1) from <statement sequence1>7 [1 Y, s6 a) r o) h
until <condition> loop
# {; G) D' p4 ]* n/ y' b <statement sequence2>;' G$ G( u7 h2 N, U9 G
end;
+ X9 Q$ z" J' m* Y$ B8 }) e" _6 A. Y (2) while <condition> loop p, Q9 u2 J* t3 A9 r- d
<statement sequence1>;. L) M; U: z! P, g) B! h; n
end;! \0 T6 M$ f, E' J) h8 y* H4 m) ^
(3) repeat 6 M- V/ [5 e p7 m8 D6 \
<statement sequence1>;
2 `9 s) t$ ]' G8 I until <condition>;
. G/ S5 E* H- s/ L" m (4) for <condition> to <condition> loop% g' a) ?; c5 u; m% c
<statement sequence1>;8 {7 {6 p4 J. c8 H2 D: `
next;
5 S3 c+ h) |% u; _& s j$ I% o3中断语句
" C9 z0 p/ u: ]% \" G waituntil <condition> prio <integer expression>;
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以上为常用的函数！* a4 _8 D/ l7 S1 I) W! X( k
还有很多，如有需要我把资料发到你邮箱里 # e7 n4 I/ u2 I' |; d7 \0 P7 _
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