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发表于 2012-11-13 08:48:12
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1判断语句
; r- m/ t: R" r/ N5 d5 } if <condition> then. M7 k* y- {0 z
<statement sequence1>;2 G! m' y# i" n0 g/ q' x- b( h
elseif <condition> then
. m( g6 R# `0 y0 V+ @ <statement sequence2>;9 U( o" ^+ {9 z" P o
else " U8 N9 T/ p( `/ u; D. Y
<statement sequence3>;
% w3 B% F; s1 m# _( d end;
. s+ u" r \2 _, I如果分支比较多，用：
) y3 x- ^! [- F3 I( W* K6 Q inspect <expression>( B" Z# h. P# n2 x
when <constant_list> then
! S4 k* Z4 e( `1 g: s# X9 @. l, t <statement sequence1>;
8 h( O" L( r8 l* h+ _ w. [ when <constant_list> then
0 H. G( [8 M: Z) ~9 N <statement sequence2>;4 O5 U+ P8 k" @5 }
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else
% _0 H4 |" ]4 t' v <statement sequence3>;
2 ?3 @- x, E2 A* m$ i# {+ [* u4 v0 M |end;# e% ?0 }$ a/ `& ~" x
# D7 D9 ~: V7 ^# V; @& _+ U2循环语句
9 r: b. E" e! F (1) from <statement sequence1>( j/ ^5 k! W, j9 P8 K; [
until <condition> loop
1 ^5 d* B$ s0 s$ [- C <statement sequence2>;$ P0 ~6 u6 K2 x5 u/ w) ^ E
end;
0 K7 H0 O; G$ |& B (2) while <condition> loop
$ q; w, P2 f5 | <statement sequence1>;) A$ \- Q P ^* W" |( v- w' J; u
end;
]0 Q3 w4 h, b% q; G% a6 c4 M0 {. \ (3) repeat
6 Q: ]7 o/ y4 I r$ z& v. ^ <statement sequence1>;
4 o2 J |! p" f until <condition>;6 p% X6 t ]8 V2 r4 a
(4) for <condition> to <condition> loop* a# j6 z a$ N# K! S1 {: }
<statement sequence1>;' O' t4 j. G8 u9 H3 Z
next;
' x4 K% G) W! t; |, U7 E2 O3中断语句
! q7 C d& i! P% ^ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
! ]0 B$ e+ Z: b+ f' j: ~还有很多，如有需要我把资料发到你邮箱里 4 L( i: D/ ]1 B
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