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发表于 2012-11-13 08:48:12
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1判断语句
' G' K' U, ^- q. l7 ?; c+ ^ if <condition> then" | V7 q) N! J& ?6 u4 a
<statement sequence1>;% g* P2 d4 E: C2 V2 p' K2 Q
elseif <condition> then
# m5 s3 l/ h8 B h <statement sequence2>;3 [2 H1 F" ~- {. m) |- u: U F
else
' b0 T8 O! }# a4 s <statement sequence3>;0 `) ]8 b- E8 [9 R
end;
9 \/ A; u+ a1 D0 j如果分支比较多，用：
, c' b5 l; Q" m6 _7 i+ h inspect <expression>; h3 Q% v# ~# \
when <constant_list> then
# y- K; ~. P- r8 P, @ <statement sequence1>;" C' z" t3 B i
when <constant_list> then
: \3 W4 |& a5 M' N$ _: U$ E, { <statement sequence2>;2 T4 Q" r' n- ]' A, z
...3 F' G6 N4 d F1 h0 S( c
else
" J% A* f1 b, |& H <statement sequence3>;* U9 \# |: S0 `/ a& J! Y
end;. }1 c, C# D. O: Z8 M; I
5 Y. \- b/ C/ b0 H( M4 E4 \2循环语句
; P. x2 l! U7 I/ V: k8 w3 Y X (1) from <statement sequence1>
1 f9 L4 n: @2 c until <condition> loop' \0 @ t5 J+ M2 w
<statement sequence2>;
0 b. l/ q" O2 T9 [- o6 H% o, F end;
+ y3 J+ n7 K* S. ?- o (2) while <condition> loop4 }: N1 Q8 n( `1 {, n/ X
<statement sequence1>;7 Y7 {8 }, I D
end;4 f! Q- y/ b3 O0 z+ O9 K7 n' u
(3) repeat . [9 J' F# h9 f0 M X1 Q w$ o
<statement sequence1>;
% @3 T* [- A A" L e0 C R& \3 j until <condition>;) e, r' ^- g+ J" Q0 r' e
(4) for <condition> to <condition> loop
! @ m6 x) D+ [! j- X( T2 i <statement sequence1>;
# S! k, e* |8 a. p4 _& F, y/ W next; i5 m4 e8 ~6 x% y* Z1 x% D
3中断语句
$ F( M; ^5 A9 p) W waituntil <condition> prio <integer expression>;! B3 K8 h+ l' _. n* }2 E( c
7 {% H H- E2 G0 p- ^
# N8 b' i4 {$ L: B9 ^
以上为常用的函数！6 y' Q2 ~% }- y; a# V/ k
还有很多，如有需要我把资料发到你邮箱里 . G/ Z! s- u) c" Y8 X9 B
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