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发表于 2012-11-13 08:48:12
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1判断语句% z- X* u: r9 L7 V9 [8 \
if <condition> then
( S1 ]# G5 X+ ]! Z <statement sequence1>;
& P9 q, Q" i; a& Z$ q) f elseif <condition> then
1 C* l3 E% C1 r+ o6 D7 j <statement sequence2>;
0 O( y' S, I9 z9 n% m6 ] else
5 w- u6 p, I% H3 I <statement sequence3>;+ L3 ]; D; b! m' q" d2 d
end;5 S& }( G* v2 N5 o, f4 A) }3 r
如果分支比较多，用：
) V9 K3 a$ o# g: z* }( O inspect <expression>; \3 B5 k3 B; w. }& R( Y
when <constant_list> then+ v0 P' d W9 O9 c
<statement sequence1>;
5 R/ H" |; c' A# M8 Q" \! N when <constant_list> then
% k; H+ F7 k3 S <statement sequence2>;; x; o0 w0 Z" {; o& z* Z5 y Y
...5 o1 ~9 f( k- y3 Y) H( k
else- j- n3 N3 e! c7 ~% O% Z' ~
<statement sequence3>;
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2循环语句
4 [1 J3 B0 L8 B! _( i Q (1) from <statement sequence1>
7 J1 p3 ?: k) e* ^, ] until <condition> loop6 Z" X# i6 U v, h( c# V* G
<statement sequence2>;
+ F9 c8 ~0 R9 R9 N end;
+ {" T/ w `7 u1 i" X: U (2) while <condition> loop& g, O: @4 ~$ \( }. W+ c
<statement sequence1>;0 O- b+ D4 y3 E4 H
end;0 [. O" P3 {$ u( I# H
(3) repeat
2 G3 V6 y# x* M2 U3 I. ?- L: b/ B <statement sequence1>;
8 _# t: ]1 P' |. }* D0 E) ] until <condition>;
( K! d) ` X# o1 [ (4) for <condition> to <condition> loop* C3 ^8 U$ _4 q2 D
<statement sequence1>;; q! s% N5 ?. H6 q; L/ }
next;5 l- h! W# t& C/ L
3中断语句
! Q5 l# K" {, ^2 ]: v2 o. [7 a waituntil <condition> prio <integer expression>;
7 ~6 b+ c* _8 g( N0 Y- m! j# `+ O- B- i& K; @* B2 D. t" V7 B
, t, V5 k! x+ d. c* z7 ^以上为常用的函数！- X% J( f* [% u. O! u
还有很多，如有需要我把资料发到你邮箱里 ' U1 W; g' |3 ` ~# h q0 x
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