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发表于 2012-11-13 08:48:12
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1判断语句
1 b/ Q( H- j) r5 \7 t1 U- s if <condition> then1 ]8 w* E4 ^, V) O" m: z" H) h: b' g
<statement sequence1>;9 K6 U- x" n1 F* v6 H
elseif <condition> then
1 @. v. D+ E7 Y+ n6 w" q# V <statement sequence2>;
4 T- x' J1 |6 I! [9 s- @ else
) G! z, h. ]- B$ p8 a/ ? <statement sequence3>;
' z7 j3 B, r: a5 V4 _ end;. W5 m7 p) e# k3 |, h
如果分支比较多，用：
2 N# [1 v; u3 i( h inspect <expression>
4 _( o+ [* ~2 X6 [2 K) a" X8 s when <constant_list> then. F! y5 Z- ]3 R3 \& S p
<statement sequence1>;0 v9 N- C! j: @- ^" J4 [
when <constant_list> then: y( @/ H6 K: t3 C% U( ~
<statement sequence2>;6 a& ?6 p% e* p
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else
3 c2 O0 W/ `: h& g- l5 ] s( c <statement sequence3>;5 T6 ?& Q8 C) M, B; F8 L/ @; A b
end;
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$ m6 {: J+ B* l# N) W: {" r2循环语句
3 A! Z k7 `( z0 s (1) from <statement sequence1>$ g) n$ J4 K% [2 ?- f" H
until <condition> loop
- ^6 M8 I! c, N <statement sequence2>;
. v# [+ p6 D$ H6 s7 [ end;
1 r9 A% h- W! R+ B9 x/ q (2) while <condition> loop0 f4 ?/ W7 g0 y7 x" Z* Y6 a% g9 ?1 p
<statement sequence1>;3 q6 G& [9 D8 U t% K
end;
9 d2 g( a3 O0 O5 l, Z0 r, [ (3) repeat ; R; a5 t+ s8 |( @; @' S
<statement sequence1>;
+ N; |9 i" r' T U2 [0 o" N( z until <condition>;* H% X- ~7 ^8 X2 k; _$ |
(4) for <condition> to <condition> loop
X/ s0 T+ N6 l4 q <statement sequence1>;
* S- w8 z1 g- \' G" B next; v$ h% U, v/ h/ h4 M
3中断语句
7 X$ g" P! ]/ p' E waituntil <condition> prio <integer expression>;
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. E3 h4 C( g1 u以上为常用的函数！; Z) d9 ^; g# {0 U
还有很多，如有需要我把资料发到你邮箱里 & Z' h9 O! }: s# Y0 }8 y
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