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发表于 2012-11-13 08:48:12
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1判断语句' K9 K' M+ ?' \- {
if <condition> then8 P# V7 Q- G8 z7 H
<statement sequence1>;
; U! U- v( x9 I9 R/ S2 Y$ Y elseif <condition> then$ S3 i6 n; r) h6 J+ f" |3 a8 H
<statement sequence2>;
9 x( q- ^2 T5 R/ H" s5 V. G4 E' u else 5 X9 V; [, I4 l2 g0 O+ f2 {* a! x
<statement sequence3>;
* {% G p$ J0 ^ r2 }8 Q( j end;% ?7 l& n3 F1 j+ n8 O4 G
如果分支比较多，用：
9 G: j$ m T& e inspect <expression>
$ J6 Q) N+ m7 R* C3 L when <constant_list> then! R- }! ?3 ?: K. y3 N5 }
<statement sequence1>;
; A$ y) L$ F9 n; o& j' B, n- ] when <constant_list> then
1 p% c; o5 E9 j X- R <statement sequence2>;
3 [$ i9 o3 k1 j ...
{% }! l. Y/ ?1 \+ `; @3 `8 m else, I: @! A( ]6 s2 H$ q
<statement sequence3>;
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1 r+ p/ z0 V, c2循环语句
- S# F4 m7 \7 T+ T1 O+ o$ a (1) from <statement sequence1>
, q1 v' N' L* D/ C7 M" n until <condition> loop1 Q7 @ _+ O/ k% p+ s3 V6 e4 V
<statement sequence2>;9 v6 W7 U* [7 T' g" m7 F- z
end;
7 s- p, ]" A& Q4 ~! U (2) while <condition> loop b) r: M3 I7 Q2 s3 R$ \5 Y
<statement sequence1>;
; W/ ?" b$ q$ F. `4 a; x* K end;
- T* {# Q& K) x) f" Z (3) repeat
# Y2 H+ o p- m" G9 c L <statement sequence1>;8 V5 o6 k& V" N) T
until <condition>;
! v/ ^6 @, g6 q: R5 W" r (4) for <condition> to <condition> loop/ g9 a/ y8 I7 {! g) T
<statement sequence1>;2 z7 a$ ^: U3 t3 U- }: i( v
next;
/ |6 y" k h& ]" b! y3 D0 U3中断语句, I1 R+ h. r/ e5 L$ L
waituntil <condition> prio <integer expression>;" T/ t! g+ o, Q. o' U+ z
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以上为常用的函数！
. M1 |6 R. R" |! |还有很多，如有需要我把资料发到你邮箱里 * Y) B) m# a; p4 V* d1 J0 r, [
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