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发表于 2012-11-13 08:48:12
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1判断语句! t8 u% f+ @. g- X
if <condition> then
6 ^7 z' c% t) L; _ <statement sequence1>;2 D3 m! m5 X/ L# D; v& P
elseif <condition> then( \7 E& D( l; ]7 ^
<statement sequence2>;( a! N# @" y# o3 J3 C1 A
else
+ Y/ D8 b# q8 g& _ <statement sequence3>;
" G' c U q$ z+ k7 ]" w. s' ? end;
0 V# e% S5 \1 @5 {0 u4 b如果分支比较多，用：
4 N6 R" H K. F2 p8 k inspect <expression>
; S% x v( i! G( l when <constant_list> then
1 A# l; h' _( w# ?+ q <statement sequence1>;
1 l. f) b2 E) h9 s when <constant_list> then; `% l& ^9 j [1 r0 o2 J! K5 _
<statement sequence2>;, h: x2 q: q9 g) X. f+ [5 M
...
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<statement sequence3>;' g) K3 |5 [! I1 {5 o7 a) t7 M* B
end;
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2循环语句; v4 a, g H8 K- S3 c" [, d5 F+ S
(1) from <statement sequence1>
# C3 u+ j; ]( t$ }- F8 ` until <condition> loop
( C+ q* g$ r! C% d <statement sequence2>;
# x$ Y C* \+ a% l, d% a# r8 J end;$ ]$ C) E9 n* q, v! Z: O( r
(2) while <condition> loop% e5 o4 w/ V* ]6 S0 Y: d* F
<statement sequence1>;
! k% T( n* }. P; H. _& w5 N end;
+ {2 l( m" G; M; E' A/ M (3) repeat
+ f5 g* L Y' e+ R <statement sequence1>;
$ K5 W$ s; V8 I$ f5 B8 ~3 v. K( } until <condition>;8 x; J/ }7 `& C" M3 T3 m
(4) for <condition> to <condition> loop5 o4 d1 r2 O3 H% H
<statement sequence1>;- u8 K0 s; z- {3 t& h
next;
& C( R! H0 y4 E' v3中断语句5 m9 x5 c4 n; H& ]
waituntil <condition> prio <integer expression>;, [* P2 t L. {
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# A/ Q$ d; u/ e8 V# x% u' Q以上为常用的函数！
' E3 e; y6 ]( M! |5 r还有很多，如有需要我把资料发到你邮箱里 ; ^ M; \( D" r$ c
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