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发表于 2012-11-13 08:48:12
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1判断语句
" g0 v3 ~ l3 ], h- I6 a if <condition> then. P5 o( |7 }- o9 D9 \9 g
<statement sequence1>;
9 c( I( d8 r+ k! i0 d7 D. ~ elseif <condition> then
+ v" q6 L" D) W4 X% N1 D <statement sequence2>;
0 [9 \* ]* P, L- H2 l+ a else
( D4 L: n& y0 \/ K- T+ q3 X3 H <statement sequence3>;+ Y5 Z- Q- W5 _! k
end;) `- t! _) K3 V
如果分支比较多，用：
$ q' E, t1 x" U inspect <expression>0 `. p/ u7 g& {6 S7 K* ?3 y( C
when <constant_list> then% M# @" M3 f& r; a
<statement sequence1>;8 g# V; b9 @ Z4 \" u
when <constant_list> then
5 W6 H' I9 y5 V0 Y* ]6 x+ n <statement sequence2>;
+ s) g+ Z# {2 q# Q# [$ |+ C ...
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<statement sequence3>;! x4 e0 `( n. ~2 [% j8 t) K
end;
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0 m* }' E6 p1 d2 L2循环语句
% b" c i: Z" h8 r (1) from <statement sequence1>
! M+ T- }9 L0 H, c7 a; g7 s until <condition> loop8 l0 Q) U. u$ b* v, z
<statement sequence2>;5 ^. m8 Q4 [0 X
end;; |: d0 |1 Y* @! X9 A( S
(2) while <condition> loop
2 Y1 _+ g! u. t, {3 L& z7 S; A <statement sequence1>;
8 ]- I) q2 P+ m4 C2 Q( [; u end;
2 n( G& s6 F7 z/ e( e9 r7 a( P! w (3) repeat
& |4 R" s( b% ? <statement sequence1>;% c% J( V2 B8 v# U/ y! \
until <condition>; T9 t& H0 t. }4 O% y+ }
(4) for <condition> to <condition> loop
4 ~' \* o' \, I# \+ C1 M) {& p <statement sequence1>;
4 H1 R1 H6 ]0 W$ @/ r" {2 Z" } next;
& Y- ]. p. N7 h V/ N3 c3中断语句
, V, U9 f! M: H, x( Z2 n' y waituntil <condition> prio <integer expression>;5 c p% h5 K" }$ a! a7 X) {
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以上为常用的函数！
( k) T+ n: b* n/ i" z/ z还有很多，如有需要我把资料发到你邮箱里 % r7 U& s( r( h7 b& K* H( E
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