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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5 t8 @" e# l# F: `; n' J2 `, o
if <condition> then, {5 u. C8 _7 x0 Q. ~
<statement sequence1>;
( W0 I$ Z& g, l7 p1 E) ?4 z W elseif <condition> then
# y& s+ m% ~1 O. g8 u6 ]! x <statement sequence2>;
4 l2 u" W/ q. n) t- f else # D8 _! H8 `4 q
<statement sequence3>;
/ C. f- x3 }" J1 N8 U3 i+ Z end;
0 Q* ?' Q6 h/ x5 n如果分支比较多，用：
! ~+ F' k( j4 ]$ P7 P/ h" B, l inspect <expression>
. D2 z5 p. X2 C v4 Q: \1 l! J when <constant_list> then. {: y5 g1 t( c7 O4 i# I
<statement sequence1>;
! ~9 X) x J" g/ X; R, ?, s when <constant_list> then
, S% C+ D( x) f' k# o. X5 u4 S <statement sequence2>;9 \4 G/ `/ Z% c8 r3 i# g
...3 c7 c/ p% @5 f6 V' t/ n, ^
else
& Z5 n' \! O8 c5 Y- ? <statement sequence3>;
9 w% B5 w+ e1 L/ c) ~$ D6 h: ?% Q; jend;- G3 r4 Z2 ]6 k
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2循环语句
/ r" H9 G/ f0 D0 e (1) from <statement sequence1>9 j( w& d) o' W1 U) K
until <condition> loop3 T& I5 c: l1 C7 @& J% P
<statement sequence2>;
9 t7 y: a d L% z$ X& ? end;
1 z& s3 ^& E+ ^5 j (2) while <condition> loop O; }# ?3 ? w( j5 v- s/ q
<statement sequence1>;) Y* ~( x1 g" r6 I0 A- Q* p
end;* M* G; d) M+ P+ n( l% j& ~
(3) repeat
: l+ u" Q" l7 O9 j7 O( R <statement sequence1>;
. @- E, G3 v# k6 r/ ~7 i until <condition>;- ]& [0 K x) Q; [% I0 V
(4) for <condition> to <condition> loop: O; S+ C9 ?) c% r7 l/ R6 [
<statement sequence1>;3 c: @3 D# ], q0 @) l2 x5 t* W
next;; n, l H* C: T6 Q) m+ |
3中断语句, w3 F( j1 ^" q1 u* Y7 C9 l Q4 j
waituntil <condition> prio <integer expression>;0 o4 i5 |; F8 b; M0 B9 H' r% I3 [
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6 a" s( ?; j* [% u% i& ?9 R以上为常用的函数！: W+ s$ D& \% L. n7 B3 x
还有很多，如有需要我把资料发到你邮箱里 , g# |( u- c& `* r c4 S
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