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发表于 2012-11-13 08:48:12
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1判断语句' l! u: u+ G9 Y* s' ~, u
if <condition> then( M, s" h( W3 |- i
<statement sequence1>; _' A9 M o" h+ ]. y3 U
elseif <condition> then
: w2 `% E9 s. q, `1 L& y$ o- l <statement sequence2>;
8 v2 Y( C5 n) E& d7 ~- w8 j else
. b' d+ g# B1 t& ?! ]3 T1 z0 L <statement sequence3>;
% V ]; i/ c2 @ end;
* _& n) n7 J# ?如果分支比较多，用：
1 R2 p2 ~- q! c& S inspect <expression>) ^6 o. z5 R9 X$ u9 F# M
when <constant_list> then3 e: a2 o- I0 {5 J7 \& D
<statement sequence1>;
% F( S7 z% c" ~ V when <constant_list> then# ~% O" L6 l* i5 l. T7 k: W: n. u* x
<statement sequence2>;
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else. p: S6 u" ~* W% [$ N
<statement sequence3>;2 r8 n% G; _. |+ e$ d% G7 L& {
end;
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2循环语句7 F9 V9 {$ t# I" k- K
(1) from <statement sequence1>) h- u) I v7 T. j; U8 K8 Q
until <condition> loop
2 h, T. o8 C; }% P <statement sequence2>;& ]2 R2 M- f$ ], k. m$ T! m i" C1 A
end;
5 @& S$ c7 T8 ] m) G+ A7 G! ^! S (2) while <condition> loop
# |% B% x( z5 Y1 |' a V2 X. N- k <statement sequence1>;1 g2 k" m* B2 y
end;6 Y. {- `/ H; m, F
(3) repeat & r- v% A5 H0 f% J
<statement sequence1>;' N6 B2 T5 I4 {7 ?' F
until <condition>; U4 D) T& l. e& T+ Q+ c2 ~
(4) for <condition> to <condition> loop
' w) P& |& E0 G <statement sequence1>;( S) t4 F' w9 }- \$ v
next;' w! i8 g- ~: i+ _( e, @
3中断语句7 p4 a3 j* m7 f: y( P( M9 A0 e
waituntil <condition> prio <integer expression>;$ Z2 k' [& x3 ^" h/ g7 t7 C
, [) h; C3 E8 R0 y. H" X7 q9 ~* ]
1 E4 @7 P) F* L以上为常用的函数！
, F. q& L- d) H/ Z7 v还有很多，如有需要我把资料发到你邮箱里
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P- x# M: Z" M& g
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