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发表于 2012-11-13 08:48:12
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1判断语句. O% x0 T3 l# p& m" _& L5 q
if <condition> then4 y0 e c6 \, o; E/ n0 ~2 i7 A( q
<statement sequence1>;
; {$ d; w- s, K4 y& `. I" K elseif <condition> then5 g6 S& K2 A) D o7 ]/ {; h
<statement sequence2>;3 p+ [7 S% V4 C% N
else [7 F+ f* G* ]. @
<statement sequence3>;
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如果分支比较多，用：( i8 [" ?0 u4 v2 [+ H1 w
inspect <expression>
( ?) a& u4 f: g) u' C) f2 W when <constant_list> then
% j% Y: O2 U* c, Q <statement sequence1>;
! P2 N. ^, q) X: T' u; ~. i i: t8 Y when <constant_list> then
& Q1 l5 }4 u" T' } <statement sequence2>;
8 l6 c) ?( G& V: ~8 c2 p ...
( J- ^# {0 w# u3 j6 I# z- @$ W else
8 k) U% G; M& Y3 u5 Y8 m/ P7 O <statement sequence3>;7 W. K0 e$ {! J# v' o) ?
end;
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2循环语句% Y( p3 O+ J1 K2 ^4 R: J
(1) from <statement sequence1>* e" e5 c7 P4 [' s) U% z+ L
until <condition> loop
6 Z r* h- Z# Z; D <statement sequence2>;! }" ]8 J; y' C
end;2 K9 \ h8 p7 _4 d" F
(2) while <condition> loop8 @& E& n: Z: }$ A0 f
<statement sequence1>;. L* C7 S( O# s T
end;
5 u/ X, n7 u/ R3 |5 T7 J6 P (3) repeat
b2 h7 [" o: P" ?- u0 S2 h <statement sequence1>;
- E9 |- N# l; m$ I; ^1 @- p until <condition>;
. ^' j1 Z; X8 B4 j4 M, D (4) for <condition> to <condition> loop( p: a+ S% | {. e: E! z
<statement sequence1>;# c9 f, S$ y @: y7 w
next;
) a$ M3 I& J% o3 w5 r/ |3中断语句$ n- G, ^! k2 ]5 m
waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 t. {! M8 f9 F7 ?/ j/ G
还有很多，如有需要我把资料发到你邮箱里 , w! s6 ?3 w8 _) f4 n
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