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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
4 Y$ T4 }% K5 s) q0 l+ `. | if <condition> then
+ Z! O: w) l' l/ F! r) |4 I <statement sequence1>;& H- a8 c: L! I: W, ]: L
elseif <condition> then3 ]3 b. s( M1 ^4 J
<statement sequence2>;
8 I3 _% r. X; z# c else
1 G( R3 {$ u( S2 u. \ <statement sequence3>;
9 x' X( Q* l+ X$ \1 r- Y/ q( K end;
2 |9 v, h/ \2 G9 Q- Z! o如果分支比较多，用：3 r7 Z1 b9 x+ @; I, a
inspect <expression>
2 l( A9 l* P% b P- T0 h when <constant_list> then
0 B5 G! c' D2 _8 h, r- w8 ]3 l J* Y+ D <statement sequence1>;( {2 {5 X& P2 _- L& K7 s
when <constant_list> then
# M9 k0 T2 G8 l( W+ ^ <statement sequence2>;6 S1 K: J! v4 t; M) d" g7 u
...& k5 Y( H1 d3 w, N9 B4 ?4 E* l
else
4 W, i4 N# l$ X, @. D) ~ <statement sequence3>;
1 O3 l9 [8 `: `end;
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" u7 Q# ?$ H) U9 L6 Q" Z" D2循环语句/ B9 O# Y0 {* ^* R
(1) from <statement sequence1>% G0 M* @. C/ Z6 Y; r6 e4 s
until <condition> loop
# N% T8 f5 n: R# ~: Y <statement sequence2>;
7 i e# V! W8 Q+ U" j% {1 O end;
( D7 j1 Z4 ?# N' b* G (2) while <condition> loop( ~+ K! m7 ~, p2 D# y7 e
<statement sequence1>;
7 H' g! k* |0 Y+ f, K7 ^ end;
6 ]& V2 Q# d7 f; R, }# A (3) repeat
) \3 C7 j5 w6 Q: u! d <statement sequence1>;0 Q7 @" i1 ^; E7 d/ E
until <condition>;1 V4 D: o# D3 t! Q" C c6 C
(4) for <condition> to <condition> loop8 Q! E( g" B4 w: w; b5 @+ ?! w
<statement sequence1>;: b8 r1 C! |3 S9 I0 M3 i) n
next;6 o7 w2 O: Z! G! R, I3 G) H- G
3中断语句
& \1 {" w, E7 H4 g waituntil <condition> prio <integer expression>;# Q1 r! I: B4 D) d8 [5 {
, j2 n* c4 c8 ]1 G; {) m ?# ]+ a
以上为常用的函数！! n( @8 X1 b1 N' ]
还有很多，如有需要我把资料发到你邮箱里 $ o9 x: M9 \$ e1 i
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