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发表于 2012-11-13 08:48:12
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1判断语句( ~, c+ n, o" ]8 {! o2 j1 V2 r
if <condition> then
& \3 J% J7 ^. X$ {9 _: s0 r" d. O* B <statement sequence1>;
. w8 }" A m; k1 k; B elseif <condition> then% ~3 G( W- p1 x+ V: v1 @5 z* t
<statement sequence2>;* z2 k; Z9 E+ A' U. {
else & V# J2 ~0 ~$ N
<statement sequence3>;
( L2 u8 d8 x% H5 `3 [+ t end;
' U J: E ?" }4 U! S# F3 ~; k2 y如果分支比较多，用：2 t& @# D! ]1 R2 h- Y
inspect <expression>" ]3 _* n% V0 y
when <constant_list> then
9 B4 b3 f/ k1 \: E, w' r( ^* _& A <statement sequence1>;5 w# q0 @3 a, C% {
when <constant_list> then
. D8 C j& w; A" k <statement sequence2>;5 ?: B, s8 i' P
...: s6 z8 n, |# C! q F
else
6 E& c2 }: Y3 i% t' W; X <statement sequence3>;
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2循环语句. l- F; L% w, K& |2 d
(1) from <statement sequence1>
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" _( U" a. h/ m Q) k& { <statement sequence2>;: q/ A& ?+ d9 _- ~
end;
9 Q+ g$ T6 s" U$ G (2) while <condition> loop
8 R% r1 k* y# Y% e8 o/ ` <statement sequence1>;. ~! a- |" |& f3 D
end;2 y* P6 }' Y" G, {7 S2 T
(3) repeat
/ x0 `$ [6 F# \8 m. s2 y: x' K+ ]$ J <statement sequence1>;$ h* G( k, m2 b! p
until <condition>;' {& ^2 D. k) G$ Z1 G1 A+ T
(4) for <condition> to <condition> loop" S4 O8 x |! m7 ?! f% c
<statement sequence1>;
8 W1 ^; y% y9 n2 B* X' k next;
" k! P" t, O" p0 P" `3中断语句
) z% _( U- F% m7 {6 B6 ~+ s waituntil <condition> prio <integer expression>;2 ]& _. U( K% W; m% b+ X* O, b
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以上为常用的函数！8 \ e n+ a6 G% g0 d9 ~- e a4 W8 }
还有很多，如有需要我把资料发到你邮箱里 , z9 C" P, P- V# [: ?
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