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发表于 2012-11-13 08:48:12
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1判断语句. _* k! W7 A. l0 A' c
if <condition> then
1 R+ m; u9 N+ x$ i: ?- @2 X% N* l% F <statement sequence1>;5 u* l1 L) N- f1 ^$ \
elseif <condition> then
7 E, n. I5 E* M# N3 j/ J <statement sequence2>;9 m7 j8 F6 Z) E/ H6 G c! k
else ' T; s) f8 Q7 R7 p1 D3 C' d$ P; F
<statement sequence3>;
9 r3 }6 U9 [* I& o0 I7 y# v+ H" C end;
$ C0 n6 W! }, H0 E如果分支比较多，用：
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when <constant_list> then
- X, k9 m }+ K, w <statement sequence1>;
- U' H( `" {/ f" u when <constant_list> then& m* Y( Z0 X5 O; Z- K
<statement sequence2>;
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else
# P/ y6 F3 u, J3 Y, P2 w* r- v <statement sequence3>;
! W0 e8 j0 `9 v/ ^4 O8 tend;
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2循环语句
% z l( i# M+ ?) R2 J; }$ H (1) from <statement sequence1>; q9 @& j8 N5 m: G. l( e
until <condition> loop) b" D0 Y" ^8 ^, I! o
<statement sequence2>;6 r, U* Q9 ?3 f" ~: z- S
end;9 C+ P5 d/ x( o6 G
(2) while <condition> loop; O% L5 B, F% M+ G2 D( X
<statement sequence1>;
6 {# [. t# }: P/ [+ `9 x end;6 [3 p) y7 c. P' Y: p
(3) repeat
& ? P) U! C! }/ o1 Z8 S <statement sequence1>;
( }, ?7 t% ^6 L* |. T& p until <condition>;
4 t2 Q$ s6 _' k' z H1 k$ i9 w& A (4) for <condition> to <condition> loop
7 U' T% D# s/ {; Q- g7 ]0 D <statement sequence1>;. }9 ]. G3 g) c- n- y: [# x+ x
next; v/ y7 l5 H& \5 M1 y% h
3中断语句( P/ Z7 ~! k6 S8 a8 o9 F& s) c
waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 @3 i; Q& ^; B9 _7 i& n, f
还有很多，如有需要我把资料发到你邮箱里
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