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发表于 2012-11-13 08:48:12
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1判断语句
5 K3 O6 R" o) J% i& m* _4 T if <condition> then
$ I3 ^* E: s$ K+ z: I, I <statement sequence1>;
( e6 e% M0 n" D% ] V elseif <condition> then% V3 @% h# V5 m$ ~& E
<statement sequence2>;
+ }( u o' q7 t8 }* C& V) C: O, [ else ' R6 Z! K | L* C7 @5 g3 K
<statement sequence3>;& @: v: |% O5 e b* W9 U: Q. Q
end;$ }, a {/ E9 Z2 X9 w. i
如果分支比较多，用：
0 a# ]% @' l! B& W/ X inspect <expression>! [4 F7 [: j& y6 h/ @0 Z, t3 q
when <constant_list> then; |/ K* l- j) \! s5 \
<statement sequence1>;
, k5 P8 l$ E+ W when <constant_list> then
8 T! r& M- K5 G# o- g7 H <statement sequence2>;
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else! @' @ o6 y9 q. P! c
<statement sequence3>;2 v" V" I& @; u
end;; I8 ?" ?$ j2 ]# k, S3 R
$ e5 e0 K: |" ^8 `2循环语句% |+ X' l& P, k! ^& w3 E" z5 F9 F
(1) from <statement sequence1> O6 B1 ^3 G1 o. |: k5 T
until <condition> loop9 [$ B( l5 Z% H9 q" z
<statement sequence2>;1 Q. q+ x8 b' Y4 P( a$ t7 |
end;2 b0 m1 N: `& f
(2) while <condition> loop
% n" d9 C, W$ G7 k3 A9 Z/ j <statement sequence1>;5 Y$ m; i# Y! }* x* _8 L
end;% W8 i9 x, Z2 w5 F
(3) repeat
' p. ]8 y& q" ~$ ? U9 Y8 B- a2 d5 m <statement sequence1>;
( N0 u: F3 k! l1 M& I" e until <condition>;. K+ t; k# Z/ \8 N
(4) for <condition> to <condition> loop
2 r/ B5 O2 { h9 F9 @) | <statement sequence1>;
! |( X& D6 w+ ?& s- G7 N8 [ next;# z: m) |/ H. e
3中断语句4 P1 p9 f& ^' B6 `* Z3 N
waituntil <condition> prio <integer expression>;' I/ |9 r% e" _9 y$ H1 U5 |0 a
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以上为常用的函数！
Q( p- b7 ?3 l# U9 j7 E/ m还有很多，如有需要我把资料发到你邮箱里 6 z5 J1 A0 R Q' W
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