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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
$ k$ P5 Q- s9 W( l5 ]3 x& p6 E/ f if <condition> then2 W2 A; v9 U4 k0 X0 y
<statement sequence1>;
, y/ X% r' u* ]% Q0 R elseif <condition> then4 |' e, H- M2 t3 y
<statement sequence2>;+ s) v1 _8 X B( h9 A, m- L- J
else
" l. J3 y6 \5 ^8 M o <statement sequence3>;
5 m& [) z5 b" K) T end;
/ ?5 c" \9 L' r' {: [' C如果分支比较多，用：
$ b- ^: Z5 z5 E3 c+ L inspect <expression>6 Y4 K, H+ e" i$ f, x7 P
when <constant_list> then
6 J4 }0 ]3 b6 J- M <statement sequence1>;# V9 Z) o* ^! g0 c! T% d! B
when <constant_list> then) I2 J* J" ?3 C/ K# Q0 i
<statement sequence2>;* ]- O5 f: ?7 ~8 ~/ ^ [; K f, b3 x
...$ m9 W& t5 e0 I- Z C4 F
else
1 J1 Q; T$ \) _ o; k <statement sequence3>;
+ u9 o& D4 e t) f% Lend;5 D& {2 B: x) v) B
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2循环语句
3 |& a2 H9 _ C. g, w) n# Z X1 G (1) from <statement sequence1>( }$ r6 q/ o! H2 l% y$ ]' e
until <condition> loop7 j: a* r' \, \, ]3 e9 ~& E$ D: R
<statement sequence2>;
Y+ I% \# ? e8 z d6 ~2 Z end;
* j' W5 c! _+ _$ Y f4 \ (2) while <condition> loop* [; u4 m2 S8 m3 D/ ~
<statement sequence1>;
+ F$ {5 f d6 T/ h1 {- O end;" H% U: N' q! P$ E0 O
(3) repeat - y _: r+ w8 g( s H; W+ p
<statement sequence1>;
6 k9 \* a w3 `( ]5 E until <condition>;
# M) a7 u* z e" q (4) for <condition> to <condition> loop
) f+ \- r' d5 E' } <statement sequence1>;4 R6 A! M" v7 }( E
next;
' \7 o" X& r9 K5 J9 N8 V7 L: ?3中断语句2 f. J) M V4 z. C
waituntil <condition> prio <integer expression>;6 k% l! e. c( |9 I( V* k3 x
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( [9 o9 f x. D( w以上为常用的函数！
& k2 Y5 c" h! j& b还有很多，如有需要我把资料发到你邮箱里 ' \" w) [, s3 w4 K Z. c; Q, z
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