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发表于 2012-11-13 08:48:12
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1判断语句- N+ O; D0 m6 J# T" O$ q' _
if <condition> then8 A, P4 {* K; d& p) X! U: S% ]
<statement sequence1>;9 J' Q# G1 w& ^) I0 \
elseif <condition> then! ^4 P' V* B& o9 e0 S7 ^
<statement sequence2>;
! s# m- ^) y4 {) l; _ else . F, T# Y3 z8 J/ Z! d3 w
<statement sequence3>;1 b, P' ?9 \" \. D6 b% `1 `
end;' e# f$ f; e, w
如果分支比较多，用：
1 h" c$ t. B% s- F- K, {2 }- j inspect <expression>0 B# h8 \# z4 T1 {' h8 |
when <constant_list> then
9 E: p* N5 ~. M$ {7 g: V8 X( o, W3 y6 M0 t <statement sequence1>;
$ K0 o+ W# c/ @; N% k: m when <constant_list> then& S/ s2 V5 C$ Y5 k9 Z
<statement sequence2>;
6 I9 V) u0 ^ Q' ] W0 Z ...
6 ]2 @ ?7 e* M2 z7 t } else! P, M! ^7 O$ u+ I& J s6 v& s
<statement sequence3>;' l( Z' n: C+ Z+ ?1 r( {9 ^
end;
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2循环语句
^( X) d: A, ^! j! r3 B; H (1) from <statement sequence1>
8 o" B6 P0 c9 w. I2 Y4 J' R n1 s until <condition> loop$ {2 N5 I% z& `& ?. ~
<statement sequence2>;
4 d8 t3 K& c/ U) y4 y end;$ \/ F7 z# _* V
(2) while <condition> loop
9 B$ Y5 M/ q8 `2 \: A2 @7 P <statement sequence1>;+ k u5 b0 K0 I- P
end;
( E$ i- f# ~/ _0 N2 W" I9 C& G (3) repeat
3 C8 ^) |% Z* u8 y, v" N9 o <statement sequence1>;9 X& E( Y( [ ^) n5 G5 u
until <condition>;
) S* F, @3 |0 w0 e4 v/ k% { (4) for <condition> to <condition> loop! c- l; O l0 V
<statement sequence1>;
3 x# C8 ^3 P7 Q5 m* Z next;- S9 l; t1 m. I% p/ @
3中断语句
9 l' I t- |, c waituntil <condition> prio <integer expression>;6 y! l# d' \$ T( e
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以上为常用的函数！+ p) _& Q L6 B
还有很多，如有需要我把资料发到你邮箱里
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