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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
, X# W0 j4 N% u' R if <condition> then
& `! \# i+ [% G, v <statement sequence1>;
) w, u# E L+ O N7 X elseif <condition> then
+ u' |9 t0 e& Y! _! i <statement sequence2>;2 R( z; U( r/ E3 ]7 |
else . c* B: i& E: S3 {
<statement sequence3>;
8 K% o' e' z# @ k7 w7 ` end;; Q5 J& }8 I8 q: T* v
如果分支比较多,用:$ w8 a" F; s3 q- h7 U4 q8 w
inspect <expression>
4 L9 `# I( F3 e+ \; x when <constant_list> then
- G/ ]! o0 [) `, A. T <statement sequence1>;; q. Z, s* E8 ] s
when <constant_list> then
+ t: f8 f( |% Q; c <statement sequence2>;1 q# L1 r4 b' P
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else
Z4 _6 `' d( Q <statement sequence3>;
! \" |3 A- R# L9 |3 I3 g. B4 @end;( f. ?' m" q# Z
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2循环语句
/ f, R1 i8 ~6 {& U; E( y' Q (1) from <statement sequence1>6 X+ @/ y! V* w1 m
until <condition> loop" C" i6 I6 M7 \9 `. H+ m) L
<statement sequence2>;
+ E' k/ g2 Y9 S& f2 D end;
; }. H7 S8 b, F" Y5 K- j (2) while <condition> loop( R* Y2 O& f7 }9 R- w: k
<statement sequence1>;
4 p1 }+ f% k% s3 Q% { end;
' n, k5 Z$ ~0 x" Y2 [" k (3) repeat
2 {$ p0 U! A& G3 [) B$ g <statement sequence1>;4 @, }% N5 a3 t
until <condition>;
( _7 ?" Q8 M b4 l0 U (4) for <condition> to <condition> loop' i' }# x# n0 _6 @7 w
<statement sequence1>;% d; f2 \; A/ c
next;
' T+ Y* E: z T j9 E* F- t3中断语句$ P! c: M, |2 V3 G! {+ Y
waituntil <condition> prio <integer expression>;
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+ \) S! F ]$ {7 K7 s) `
7 R1 f/ E9 n8 d9 O% `以上为常用的函数!
0 @7 j0 y& Z8 F7 Q" K6 P还有很多,如有需要我把资料发到你邮箱里 7 B/ r' W6 g6 Q8 J
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