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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
" [8 u [/ k* S if <condition> then+ p6 `: Q" Y0 C1 Q G- q0 y. d
<statement sequence1>;5 ^7 Q3 p$ \6 ]6 N( z# K P
elseif <condition> then- J1 e% C' m* u! g$ A
<statement sequence2>;
0 n7 W8 n0 O: d' Q1 S else 3 U) W8 V) w5 G
<statement sequence3>;- u' W, @3 I' ~* s( }4 e
end;
- s# ^5 ^5 B' Q. M: b" }* C, r如果分支比较多，用：$ z% U6 [1 j' l( d; v/ O8 F
inspect <expression>
: c' {# A, G e( u& K9 S when <constant_list> then
7 G: | U$ z2 S7 \ I o <statement sequence1>;
( N4 X! i: `, l3 E. k% B# } when <constant_list> then9 r6 U2 v' ]) ^4 w8 {8 X
<statement sequence2>;
! [3 ?1 p5 O% k! T) P3 g$ i1 U ...
: M* p x2 m( `6 e2 F4 Y' j else
4 R) g9 @# e6 j& e. ?. C <statement sequence3>;8 K; h7 H& \- W& q
end;
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2循环语句, a5 p2 W$ {. O. ^
(1) from <statement sequence1>
+ f4 ?( x# |: s, ? until <condition> loop4 G) U3 v9 _# S; h; @) s9 |! N
<statement sequence2>;
; P$ M2 a8 ^" m7 i. D end;
& W. [4 M" s5 p! t( q1 ~, p (2) while <condition> loop/ F: N5 @5 l$ M. J& K/ a* R* ?. P, V y
<statement sequence1>;
$ F( ^6 a }+ v- R# H! X Q5 F end;
+ @ T3 U0 Z& Z F {5 l (3) repeat
: ]/ z: ^ ~' L; v1 G- z# a <statement sequence1>;2 \( t- @% t( R2 D9 g) o
until <condition>;, ]5 w: q k/ f! Z, |
(4) for <condition> to <condition> loop( q- c- v& f1 ~2 N
<statement sequence1>;# q# M( u9 W3 p) A3 k
next;
* s: U- C) y/ |7 _) `" i3中断语句
+ J8 T' [* L" Q4 T* C+ ^: P waituntil <condition> prio <integer expression>;1 p3 q' b. R% \4 Y4 q8 q7 P4 v( s
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以上为常用的函数！& `2 R+ s" m) Q" O$ U( c) E
还有很多，如有需要我把资料发到你邮箱里 $ q0 T! V2 F1 u- M2 F3 r4 I. k
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