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发表于 2012-11-13 08:48:12
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1判断语句/ T0 z! ]4 a$ b0 A, P
if <condition> then0 G5 {; X) {5 ?1 j# U$ d
<statement sequence1>;" ^5 b5 P t$ S8 u& T
elseif <condition> then1 l; h! j2 c% f* B" f
<statement sequence2>;5 u4 d: R8 ~4 M2 {, Y- u* L
else $ R$ g% n6 P+ K# n" ]
<statement sequence3>;5 y3 ^& L: T& g" w s5 O
end;
7 i! n) ^5 q9 c+ B6 w如果分支比较多，用：
. f( v( g# T" v6 g- S inspect <expression>
' n+ q- e+ N% m9 l! X when <constant_list> then- ^+ X' E4 ?# C3 V; p, |! g! C
<statement sequence1>;
# ^, M+ ?5 h k0 k& u) `, \ when <constant_list> then1 Q, ~& s' \* H
<statement sequence2>;
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else$ r. d) Z; W" n4 `, |+ r Y
<statement sequence3>;
4 I! J7 C$ ~& r& n. M0 z# @end;
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0 |9 b3 X! z& s: m% Y# v: j9 k2循环语句5 F$ \1 ~5 O( c
(1) from <statement sequence1>( Q4 R6 _3 h4 E! ~( R0 X4 x
until <condition> loop
. ~7 {( r* I. m$ | <statement sequence2>;$ W+ b! i$ T0 Q) X& r
end;) V5 N. g" D/ X N! t5 S
(2) while <condition> loop
3 |" `0 Y' K5 C a0 G <statement sequence1>;+ H2 |8 E" O0 g* c
end;# m. L B- y$ \3 v" G. ~
(3) repeat / ?& s" O" l3 K# K. Y/ z1 n
<statement sequence1>;
, l2 n' M% l6 c until <condition>;
' E6 j8 j5 N4 g8 d6 J (4) for <condition> to <condition> loop8 `4 J7 \4 t0 u4 L/ n/ @7 }
<statement sequence1>;
* Q* Z; \9 a: t1 ` next;
: a9 C: M- z% [3中断语句) `8 {' H% K! h: H. W
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
" F+ b! j& P3 J还有很多，如有需要我把资料发到你邮箱里
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