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发表于 2012-11-13 08:48:12
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1判断语句1 n/ {% y2 J& b
if <condition> then1 f E/ e/ N+ ~2 f
<statement sequence1>;% |- }5 d6 e! Z8 |& g. R( y
elseif <condition> then" _) i; I. }% T. E U E
<statement sequence2>;
* G9 N9 k& d, a4 S# O/ ] else
. i- C6 G6 j' _ G& ? q <statement sequence3>;
9 Q! q' m4 f" H' s2 B4 O9 u1 H end; f/ Q8 T% Z) m4 ]$ F" A
如果分支比较多，用：
/ f0 o( N$ ?8 O; ^. p inspect <expression>0 E$ }: h% R6 Q( I- X
when <constant_list> then
7 j- p$ v( o z <statement sequence1>;
* z* b' D# {* ]: S" n. S" \0 B& I when <constant_list> then. D, C! {8 W) ^% g, q/ u
<statement sequence2>;
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else
6 @7 U5 e6 C! h; F) E( q' `/ C <statement sequence3>; e$ [( ]/ ^% @1 q! p* \) R' ~$ I5 x
end;: `( S# z- E4 g$ E0 e5 H! h
" q: R# I5 h$ |* S2循环语句. Y! Q$ T' S" i9 r0 K9 T
(1) from <statement sequence1> f8 c( `, p( k
until <condition> loop
2 _) J' x, W; {5 G <statement sequence2>;, l0 A1 z F% k. q8 z
end;
9 D7 o1 V" ~; Z! R7 Z7 \ (2) while <condition> loop
9 r/ W8 o; E! J! D+ R- z <statement sequence1>;
: s5 P# o, J! y1 h/ ]9 X end;
6 @7 _: O# G z: ~" Y9 g" Y (3) repeat % ~. j8 h& g/ W; {
<statement sequence1>;/ A& f/ a$ v7 Z6 Y2 C
until <condition>;
# Z2 p5 u( x8 E1 a) a (4) for <condition> to <condition> loop
' `& @$ i( J. U0 M' V, ?+ k <statement sequence1>;
2 @7 X# Z- R$ X$ f" _ next;
4 k7 m I, X1 v6 T5 Z& Z3中断语句
- Q4 h8 I7 U- b0 O waituntil <condition> prio <integer expression>;: m/ Q: l3 V4 }' {2 L' d; y
d4 P! g- D' @! t+ B
# }! `& B) A1 k4 F- I' O以上为常用的函数！( R) v6 B+ y$ c8 p
还有很多，如有需要我把资料发到你邮箱里
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