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发表于 2012-11-13 08:48:12
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1判断语句
/ W$ I. S! {* o* Z# J0 h if <condition> then
' B" e0 z$ Z Y# K. k) O0 f* B. z <statement sequence1>;
' i6 ^) y9 M; V elseif <condition> then
: x' I" H5 ]; I <statement sequence2>;3 G A3 D2 `& [+ d
else # V5 S2 j$ `' u" x
<statement sequence3>;
[/ g0 ^0 q/ @8 E, [4 G; Q end;
( J8 `3 w. u: K$ g; D, o8 `如果分支比较多，用：
( A/ `0 T2 h; V inspect <expression>
0 j' k; O5 `! Y5 m- I when <constant_list> then
% k& f; _: _! w <statement sequence1>;& _2 O6 l4 J8 D9 C& W- ^0 P/ }
when <constant_list> then
: z" @+ z+ L1 D' v7 c q <statement sequence2>;
, V. V& H# \: X5 J2 j( ]+ e+ d ...
Q! I2 z' e4 m else
7 \5 s8 W1 R+ @/ Y$ l( ?; v <statement sequence3>;! C: X4 I0 r: \+ S$ g3 f
end; s. B5 q6 O3 `- U
* t8 H9 I3 o( W+ Q- Z1 O: j2循环语句
" v8 _9 c i' Y; | (1) from <statement sequence1>/ M: {% J$ D' w6 p4 Z! T
until <condition> loop& W- n( F1 X( Z% K5 g& j
<statement sequence2>;1 v; F% j- _: m8 t+ [: N* m l" t* |
end;5 a6 C4 n8 @3 ]& |$ U W
(2) while <condition> loop6 X+ ?7 c8 _( v/ U1 i1 _# o
<statement sequence1>;: ?$ b. p9 o# Y& H8 W8 Z
end;
) ~# m) E4 C& d' h4 _7 o9 Q; _! D' Z (3) repeat
3 K. @( D/ J! R- \ <statement sequence1>;
9 ~: z2 G( e( X9 c! K until <condition>;' Y# I0 Y* H; v3 @
(4) for <condition> to <condition> loop
. u; S/ s4 n& b <statement sequence1>;5 ~% G3 s. D% t+ j! n
next;! q; X2 I7 ?% P( ^
3中断语句
: ]2 ^' r5 e: K+ K/ K( g waituntil <condition> prio <integer expression>;6 V" L5 I/ J0 u9 r* x8 Q+ Q) K
, T3 b$ ?( ^( v4 N+ s- a* a
3 @& ^7 ]- A* G# a1 }/ i. w+ @ ?+ y
以上为常用的函数！
S; G! J9 g$ g1 \4 L还有很多，如有需要我把资料发到你邮箱里 ' L0 g J. X% X( j
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