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发表于 2012-11-13 08:48:12
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1判断语句
# J, b8 ^2 j) @, E! O. p if <condition> then
O# w- I% W% u; P" B9 k1 M: T <statement sequence1>;
9 ?2 j4 m. g1 k' g elseif <condition> then% E; s% G A! l% Y4 {+ V
<statement sequence2>;
# {7 H7 ^5 o: I! m else
* x! Q. H" X) \, }9 z' W$ M J <statement sequence3>;& p# M+ l' d9 U/ @
end;1 M4 d7 K" S% u$ d) |
如果分支比较多，用：6 n5 M/ h Y2 K4 S5 ]# ^
inspect <expression>
) D; @( f3 q6 u- }$ c% s when <constant_list> then
* {" x/ a4 O# Z, @ p; {+ O <statement sequence1>;! K. @' i3 ~0 t- c5 A9 l! U
when <constant_list> then; @& E1 Q' p' ` r2 r
<statement sequence2>;
0 z+ P8 ~0 X6 p8 F6 q ...
0 ^3 K% T! u: R. n/ d/ t else
1 u( [5 F* p! j. ~$ T <statement sequence3>;2 X8 V2 X7 o. q1 A2 Z% D
end;/ @% G% N" l0 N1 {" G( Z
( h. r' g& M' v! F2循环语句+ g7 ]- L3 g& [
(1) from <statement sequence1>( ?- P% P% |0 W e" g; t( y
until <condition> loop
; P: g3 N0 q5 P. }. ?) k <statement sequence2>;
- I) b' G9 z5 Z6 v, \ end;# @) f* E- l% U; I4 o( g2 C
(2) while <condition> loop& t- b) C) x L( K5 a
<statement sequence1>;
2 J' y4 T% w$ L$ E& X( x: @ end;
/ d" M" \: i* _! n/ @; { (3) repeat # l0 g) B+ _/ K* e7 z5 v V
<statement sequence1>;
1 P% N8 E: E0 K& n until <condition>;
* K6 c/ p/ R3 c5 P! {0 ] (4) for <condition> to <condition> loop
, V) j0 T, D$ E' ^# C' r: J7 ]. P <statement sequence1>;% _5 d! P! C5 @. h
next;
0 H% c* R1 w0 `" q. a3中断语句
! ]- z; \7 U0 R% F waituntil <condition> prio <integer expression>;
" O/ I( G0 o6 C4 ?" N7 ^* r9 s& D
3 g2 c: P+ P! P$ i" ^6 V' r: g$ ?
以上为常用的函数！
1 @6 ~/ B( n4 p- v4 ~3 p还有很多，如有需要我把资料发到你邮箱里 * l* i! X) `" e% {2 d+ A
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