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发表于 2012-11-13 08:48:12
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1判断语句
' ^8 B9 E1 x% c, v! E+ P0 }. j4 x if <condition> then
0 s6 d+ r A4 E" b <statement sequence1>;
# W9 O b+ }7 M8 t elseif <condition> then
, r+ Z8 ]2 v$ c M <statement sequence2>;% u9 }9 R+ c& z& W& F# n2 w
else ' }1 d0 b8 i J" z* N
<statement sequence3>;
7 z" |4 Z& ~0 i3 N* g end;
9 h: w/ h4 _, F) T- c* B; m/ q如果分支比较多，用：" ?6 V$ D( P- T& c
inspect <expression>
9 [& b z# M5 _: v; @ when <constant_list> then
& E4 z7 t9 S/ E4 y" W' I/ W <statement sequence1>;: I' F$ \# P6 \
when <constant_list> then& T3 }, R. `0 q. Z4 }8 ]
<statement sequence2>;
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else
3 x. O/ Q/ N- O0 g- E' ? <statement sequence3>;
7 m6 K2 C0 o5 a# uend;; U4 v3 L/ C4 h- x$ O A7 H& k$ v
; }5 M. e* l! S2循环语句
) G! {! Z9 P* J+ H5 i5 i* Z' A (1) from <statement sequence1>
! Q: m b. g; K/ `( X; m8 o until <condition> loop
( L$ V9 d% }) j' z F( M$ \ <statement sequence2>;& ~6 m8 e, x% ~2 G' m. `# t
end;6 l4 D6 n* }/ U0 _" G3 V
(2) while <condition> loop
4 D" D& H' V( O6 t) x- y0 ~) C <statement sequence1>;
+ @# x7 V3 B$ k end;; b0 ~" `1 I+ ?( Z
(3) repeat
" O8 N- t: ~5 ~# ~: ]& w7 m: @6 B8 n <statement sequence1>;. F1 X0 Y2 q9 H, a- Z/ Y
until <condition>;# b& t# o7 y$ ?# F
(4) for <condition> to <condition> loop9 g' }% d# f" L* M' K0 K
<statement sequence1>;
. ~3 P5 _$ S2 O next;
7 G* B7 Q0 @3 S0 _. n/ ?! {' Z- g3中断语句+ l# i8 [6 \9 w1 X, V, k& y
waituntil <condition> prio <integer expression>;
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以上为常用的函数！, ?1 \! {8 ]( Y+ C" { M! b
还有很多，如有需要我把资料发到你邮箱里 5 F' _; L* s( e: V$ j
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