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发表于 2012-11-13 08:48:12
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1判断语句9 V: `" Z8 x+ ]1 f) m
if <condition> then
0 p9 i+ k+ a3 a6 T8 J4 j, | <statement sequence1>;+ v4 l6 a! q7 W" ^. ]# D3 m" }
elseif <condition> then
7 a4 d) C: f. c, z0 o8 K7 F <statement sequence2>;) d, o I( ]( M) F* u$ Z# T3 t
else 8 T6 r+ z! G+ k2 z
<statement sequence3>;
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如果分支比较多，用：; E. C n' K, d2 a3 D$ k& s
inspect <expression>
9 y* E6 v+ D6 W5 y when <constant_list> then
* [) r+ m7 R: v5 ]7 z: G <statement sequence1>;
X4 W8 T9 ~' y3 c" F$ x! i: l when <constant_list> then" q0 c( p' C! s# P' B [% m
<statement sequence2>;
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else
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end;
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2循环语句6 j( T( u# C. J7 V. R' Z- b
(1) from <statement sequence1>
" p; ]! J5 A% e7 e" B) ` until <condition> loop
- J' f$ z" J8 K# i( t Q <statement sequence2>;3 W7 Z0 S" H& B& v- f' F) x5 Q; d
end;& l- V P6 L7 d3 O1 m, ?: ?
(2) while <condition> loop
; }) }% _0 @- {) q a: f% q3 L <statement sequence1>;3 N5 V: M5 z( c
end;
( O9 V* V6 ]# U8 E (3) repeat
# ~7 N; c8 N. E- C- ?1 ?, P1 a- v <statement sequence1>;7 L( E+ u4 @, J) f
until <condition>;. [9 a/ y) ~' f' h5 {- F' |
(4) for <condition> to <condition> loop
2 \% U5 H* K9 T9 N- `! ^" n0 u <statement sequence1>;% L5 u6 ?" s% @
next;
& k. ~2 Z& l8 K3中断语句
& |5 X. a. Q5 {* s7 A+ N waituntil <condition> prio <integer expression>;5 A( A3 I. o- h, ?9 x. I
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8 U+ f; [& F$ _. j3 G1 K6 s1 T以上为常用的函数！
/ p* x! M& J% v5 }) W$ x还有很多，如有需要我把资料发到你邮箱里 / p# B) h) t. t$ r: d' G" K' l
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