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发表于 2012-11-13 08:48:12
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1判断语句, t, R$ J+ e: r$ n. S1 \
if <condition> then
3 J( z2 D. M. N& g+ T <statement sequence1>;5 \. _# V. `$ q, @9 d# R& P
elseif <condition> then0 a7 l8 a! t0 u" T( _) g8 ]
<statement sequence2>;, N9 @6 r6 V4 t6 ~) b0 h
else
: o- N P& ?- p9 c& C: W <statement sequence3>;* C5 r0 z5 G2 b
end;( o/ ]" w: E: ^ ^" g$ y' ]
如果分支比较多，用：
* n; l, A# K; e" } inspect <expression>+ J( K; d8 \$ e: s' ^
when <constant_list> then
( z7 t2 ^4 R! | u <statement sequence1>;
: Z: U, n- a( R* k$ h' y8 Q8 X when <constant_list> then
$ \1 W' I+ U- \5 o% a1 O1 ] <statement sequence2>;, ]0 I' d, D4 W
...+ d. p0 E. R# T8 b( ?& S
else1 H4 a. E8 W8 D( X, c2 Z$ w6 N
<statement sequence3>;4 A0 ]) ]2 j+ @7 O+ l$ r$ N: @
end;
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/ S- N9 C# c( ]. h2循环语句
/ ?) Y" d9 b* _3 H (1) from <statement sequence1>' p# Z h4 N7 H$ j+ [
until <condition> loop
3 O& H( o" [ C* U/ h% l! ^. Q. I <statement sequence2>;
+ E3 z% o: _ ]3 k6 S4 ^ end;8 I% l4 ?* @' E6 g# ?
(2) while <condition> loop
% Q* ~, H8 r6 T2 ^* A8 \4 s/ _ <statement sequence1>;
9 X# E' M% O5 o/ ?! v2 @ end;' |$ a. m' }. [" R* w2 @& p: r
(3) repeat C4 F$ ^% P% @3 M" D% n
<statement sequence1>;+ b; \6 j! x" N# x9 L
until <condition>;0 C0 J; c1 Z! u6 w9 G
(4) for <condition> to <condition> loop3 \# G, C7 x' V
<statement sequence1>;
7 S* {# Q$ p H next;
' k. S/ B. d! [3中断语句* {- g- U$ S Z, Q& R" X. f5 E. T
waituntil <condition> prio <integer expression>;- `; {( l% S( H! W
) Z- N0 @1 K' U8 M/ e- X
% k2 f) z" l- }/ A* `5 x8 \) u
以上为常用的函数！
* S+ i% R) |) m) ?! }还有很多，如有需要我把资料发到你邮箱里
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