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发表于 2012-11-13 08:48:12
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1判断语句, z. `" I) ^: z p4 e
if <condition> then
2 n/ [- H- @0 I6 _6 G <statement sequence1>;$ {* G; o" Z2 }/ `0 ~ F, c1 i1 [% r" w
elseif <condition> then* q/ b" M" m5 U# `
<statement sequence2>;. y b2 \% v: {4 `7 ~
else * ]" P6 C: }4 x0 C' B
<statement sequence3>;
" R2 I% z7 F+ t6 \ end;
0 Q0 S3 a# f$ w如果分支比较多，用：
l: _1 x' Z8 D; n3 ] inspect <expression>
& \1 [) V; C/ j0 v1 C when <constant_list> then: p& t; B9 s/ V: [
<statement sequence1>;9 ?. O4 T0 c# s1 r! {
when <constant_list> then
- e1 I: A" r" S" K" U <statement sequence2>;, b; s4 m4 j, ?' r7 d5 z8 k5 H
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else6 Z7 s' u Q, k2 A2 d0 \3 H* P O2 t
<statement sequence3>;$ m! ~# C% q2 P
end;
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2循环语句
d0 D( ]! m* h (1) from <statement sequence1>
$ ^9 q0 v, n* A; n until <condition> loop0 N% ~: x) Q& h* n! F% T# ^: _
<statement sequence2>;
! T+ o8 r/ H9 n* B2 E end;
" q+ i! X8 I1 \' ^* l5 J (2) while <condition> loop
1 ~& H0 V6 Q! X; ^- W" } <statement sequence1>;; K) P0 ?; B% l4 `
end;
5 B- H. x. M) t+ D0 u3 |9 n, l (3) repeat
" V5 O% ^( y& C <statement sequence1>;6 X; c7 ^' o3 M- L
until <condition>;/ Y+ J- s. O+ Z0 P7 f" Y6 _. d
(4) for <condition> to <condition> loop1 C/ N) o* n& {- T& x. y5 Z
<statement sequence1>;7 X6 ]+ v0 D" S$ b2 _
next;
+ L& h8 }( c7 F, R3中断语句
; o8 h6 s' O C$ h waituntil <condition> prio <integer expression>;
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9 V: V0 O* N g6 e7 y$ [. {( A3 x以上为常用的函数！2 w; b3 h7 K/ ~" u) r
还有很多，如有需要我把资料发到你邮箱里 9 P- F) R8 X2 q& A1 L+ p
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