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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
2 n; V5 s3 e% u! e$ P2 Y if <condition> then
( N% e2 P) r" f5 z. y! |$ L: O <statement sequence1>;, ^* C+ k4 e- U Z
elseif <condition> then
$ T3 }; {! N5 [" C <statement sequence2>;2 `, V# p0 I/ m. R3 i! @7 s) t
else 0 @/ R4 t' k4 v" |$ _
<statement sequence3>;
, L) u" W6 `3 G+ h; t1 r# G4 ? end;
& ?! [8 v% i7 Y1 _0 d: e& y" G- V如果分支比较多，用：
5 `2 i# q& ]7 `8 G( } w. f8 O inspect <expression>
- M4 q% y+ q; i6 L* V' V$ z when <constant_list> then
; g( |6 U* h( O# F0 U0 S9 m+ R# n" Q <statement sequence1>;
$ n# I4 U' Q/ N s# Y: g: y when <constant_list> then/ l @: L) m7 ^6 R6 q
<statement sequence2>;
% O* z* D7 W$ u; L; R2 Y ...
) B7 x0 u: C; T5 S: P8 t: D. Y else
; x- ~/ V! M5 x" f/ Z! o <statement sequence3>;6 _- t) H' a5 u6 X2 q* q
end;
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2循环语句
3 h% S) a0 n& G2 G4 t! V7 G (1) from <statement sequence1>
+ B' |, q2 P2 x. @ until <condition> loop2 ~4 B! q. l, l z7 _4 @9 H/ y% s
<statement sequence2>;2 A5 Y$ N+ n+ [9 w9 y
end;6 A. r- t# u; j: Q. @5 q0 \( d
(2) while <condition> loop: F3 X. s3 L4 T
<statement sequence1>;
/ c& @* t0 Q- d/ G3 ~* z end;8 V8 j3 H' G! w! |
(3) repeat * w* D! u# J, a9 a# `
<statement sequence1>;, q* p# H4 x0 p0 n
until <condition>;- s. u2 h+ f4 u' o3 t
(4) for <condition> to <condition> loop
, W, O' J/ D1 N& m4 ^+ z8 r <statement sequence1>;
* R8 D; E8 [8 {8 N5 D9 _. ] next;8 Y/ L2 A# o* e; i* Y8 x
3中断语句4 T8 z7 d- W# T
waituntil <condition> prio <integer expression>;. H7 A1 X1 {" R- s! s
; K: k% n o; X
( l' H# ?" L3 y' j E# `以上为常用的函数！
0 w9 ~' W# X7 ^* m/ {0 j/ b) p还有很多，如有需要我把资料发到你邮箱里 $ S I9 R9 _1 u1 ~. ~+ M- Q
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