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发表于 2012-11-13 08:48:12
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1判断语句
4 O3 P% p2 V6 {' K+ L& | g) ]! O if <condition> then+ B N5 H5 K f7 ^' u/ u! Y; P
<statement sequence1>;
: q' n: _# c1 h, | elseif <condition> then
; _6 L7 r4 T! j* ^6 ^1 | <statement sequence2>;" D+ W6 B% ]2 l: ^' n) z" H
else 4 D* t+ v' ]0 K
<statement sequence3>;1 t' l0 ?: Q; N8 z7 J3 D! m
end;6 \: H9 T* H* F2 f
如果分支比较多，用：
5 d9 r% {, T- q inspect <expression>5 P: u. ]/ l# [& }+ e
when <constant_list> then8 k) p; @% t0 ^
<statement sequence1>;
; f1 n7 i9 `/ e, \, A. j) D when <constant_list> then
* t: b$ s4 G0 ] <statement sequence2>;6 `, y; n, Y6 e; D+ l" N5 G- c
...
3 f* \# V+ V- x8 P+ m else
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end;
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& q& H0 G- y# w& ~, `2循环语句0 G3 j( K: w- n7 G
(1) from <statement sequence1>
4 Z6 [4 K2 S6 w. G until <condition> loop C) Z+ ]+ s" N" V
<statement sequence2>;
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(2) while <condition> loop$ s$ l9 W' S9 m: C D* b W
<statement sequence1>;* b; w: T+ L }) l! l9 w3 [
end;
% J( | W" L/ A9 q, h F (3) repeat ( a& f5 ~& x M, e \" x# }' P
<statement sequence1>;! n" X0 `* ~+ z! z
until <condition>;
' S3 a3 V6 x4 X. \3 L (4) for <condition> to <condition> loop' y: Z- n3 B |+ `( I" k3 p; K
<statement sequence1>;2 V* N/ ?' a" ?0 l9 {. J* }! ^
next;
7 s0 _# q" J! M% y$ B* q3中断语句
5 }1 E3 c- _, P$ I5 n& T9 x9 k waituntil <condition> prio <integer expression>;
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以上为常用的函数！, D5 L3 G% T( \1 I) P) k! N6 J
还有很多，如有需要我把资料发到你邮箱里 1 b: m2 e* R/ J8 D6 M
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