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发表于 2012-11-13 08:48:12
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1判断语句6 F( k7 ~& |; x& c5 v5 V9 k
if <condition> then6 `* ^& h# ^# B1 J9 z) U$ r9 h. h
<statement sequence1>;9 }) U" q' `; P/ |( s
elseif <condition> then
; ?' [1 Q1 K; z) N: r <statement sequence2>;
( c" h- H# p( X. ~( S* {5 A& s8 \4 k else
+ H# Y: o [2 g% G) l <statement sequence3>;' F0 e' w+ N0 V, t
end;' h; d: J3 g3 c
如果分支比较多，用：
* K0 I6 M* J- l. o inspect <expression>
: r1 \" l0 G& C+ l* n! V9 y% a when <constant_list> then' ^) `' n( f4 e
<statement sequence1>;
8 V# J6 u, g; n0 T when <constant_list> then
2 R3 `! O! S M% s <statement sequence2>;7 _+ f) C/ B2 G, D! \" W; e5 f6 T
...7 Z' j: J. D$ A- Q& e9 d
else
0 @9 G2 q% Y$ h* d2 {1 D- J$ W <statement sequence3>;7 i; F8 ]* C6 b ^$ \
end;! ~4 Z- s' W+ D6 T4 Q
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2循环语句+ m9 |* Q7 D2 K; `
(1) from <statement sequence1>
+ I. R u" F T' I8 g until <condition> loop
) U6 r, r7 B6 a: z <statement sequence2>;
1 N E6 ^ T2 G% i ^ end;
' g. W$ ]5 {: j# Y O+ J+ m (2) while <condition> loop: o8 |9 y' @ ~
<statement sequence1>;( H+ R! T( L1 u. Z/ G' Q6 Z
end;; v5 [3 k8 b8 {+ \
(3) repeat 1 I6 @2 ?! [ g0 q/ o6 `
<statement sequence1>;
% {7 f4 l; d! ~ until <condition>;
6 X% Q& z: U% O1 C (4) for <condition> to <condition> loop
9 z( m. W9 u# A3 e <statement sequence1>;
% }! w+ Z) f0 R6 \% x next;( M: h1 `( D- b d8 C8 F
3中断语句
/ B0 m6 Q& Y: C; N waituntil <condition> prio <integer expression>;
, I1 H) T! w- ?1 F0 O% U* G0 ?; Q
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以上为常用的函数！. @2 ~ ]* V8 ~. v
还有很多，如有需要我把资料发到你邮箱里 ! O" s9 j6 M: F$ G: _
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