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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
0 e, d" t6 W% ?7 V if <condition> then- F( t C+ D# G; ~' V. ]3 F2 ~
<statement sequence1>;' T6 G+ M2 m/ L! c/ I; \% M R
elseif <condition> then
- K# p" Y7 v N; g* l, ]6 }& G <statement sequence2>;6 Y% h! K' h& {: Y, x+ C
else ! B6 a; k0 _3 k* Y( i8 [) R% z
<statement sequence3>;
0 T% M& G2 x B g end;2 K; E" N# ?4 h
如果分支比较多,用:
" t5 e% p7 z% C1 V. U inspect <expression>
- f* E" K, ]: ?2 E1 L7 E. y when <constant_list> then
, h0 }0 m/ T. e0 I <statement sequence1>;
2 ^) c7 W! ]6 u4 }" n8 B when <constant_list> then
2 U5 y8 l# R5 @% ? <statement sequence2>;9 h7 i5 ]! L% N- }$ F
...
$ E$ E" X5 K9 D/ k else
h% M+ L/ [4 J# J4 W <statement sequence3>;
+ E6 V8 m2 \7 w0 Nend;$ U8 i( ^4 k, V3 K& b6 e N0 |4 n7 H1 d
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2循环语句
2 A& Y) m: ?3 R (1) from <statement sequence1>
% ~* O' \+ i9 d9 | until <condition> loop
% V0 V, [2 s* B <statement sequence2>;
4 O) D: L9 q: h5 P4 F end;
1 p% e1 F2 C: ?6 j+ b a (2) while <condition> loop
, E3 i2 D y; B8 q) J) N <statement sequence1>;
6 P, g8 ]5 I9 O end;
+ l2 a4 b5 w8 s# M a; d (3) repeat
# l* W) Z* i8 U- o <statement sequence1>;6 P1 H* ?" `& X- t6 F# ?
until <condition>;: q# b( C5 h5 `$ h
(4) for <condition> to <condition> loop
9 w% A9 B0 B5 L% V" G! E1 j <statement sequence1>;! E3 E6 ^5 h+ E6 J) Q4 \
next;
2 L5 a, a7 ]( u* ~- z, Y. _" y" E3中断语句
, B2 d! z2 I8 [1 w( f0 W waituntil <condition> prio <integer expression>;
9 ]8 h1 k9 C C% p
- G: o: w# ^1 m
1 U) a9 o; F# j# v6 t以上为常用的函数!
& ^- `* z6 ~) ~6 ?4 |3 z- [还有很多,如有需要我把资料发到你邮箱里
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