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发表于 2012-11-13 08:48:12
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1判断语句3 ]/ H z& Q4 T1 {
if <condition> then
3 }1 ]3 @1 ^( d0 ? <statement sequence1>;
' v" N: t4 ]! H$ R1 c( T2 l elseif <condition> then
% N" Y& |: j, t% ^* v1 @2 r& {% T' l <statement sequence2>;! T' ^% F" w& c: Q% Z0 I! |; U
else
; F4 P! [; I: W( ?5 X4 o0 C <statement sequence3>;$ L: j0 A. t9 b8 i" D
end; ]5 m0 I! b- Z4 ? ~! w0 J' Z
如果分支比较多,用:4 _, r: i( Q* x1 k y3 X- |
inspect <expression>7 B$ H* _/ w; M" |
when <constant_list> then0 m: r$ u" A3 H6 M2 r
<statement sequence1>;
! r: n8 V1 I+ K! k when <constant_list> then
( a4 I5 v: x9 P/ V9 J+ n( Q <statement sequence2>;+ ?) D) o& t4 X( R' F# O5 z
...
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<statement sequence3>;! R0 |: P! b/ O2 |8 o# N/ k
end;
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9 w4 x# L. U/ ~7 x) J2循环语句& _! {0 W; |5 u
(1) from <statement sequence1>8 {2 ?' I$ {/ N$ j$ M6 f9 ^
until <condition> loop5 A8 G2 d4 R; K$ C1 h. _0 a U
<statement sequence2>;
& |! r- J% K0 F" G8 W end;
4 K' V/ S" l5 o2 o (2) while <condition> loop
- K4 V6 C" g3 p2 J; y! I7 z- k <statement sequence1>;
1 ~; J; H x5 q3 j. S end;
* B* l( V, t- X7 I/ j (3) repeat 3 T; d [( v8 G. ~
<statement sequence1>;
) a. u6 ]6 u5 o1 O9 |0 F; \ until <condition>;/ E& j( ~- q( g6 o* U$ r
(4) for <condition> to <condition> loop" t8 d, Y2 B9 N3 H/ w
<statement sequence1>;7 l$ Z* y. y! \+ j
next;
/ d- K$ p$ e$ G, v( @; q3中断语句8 F& h& a t& E! J4 j
waituntil <condition> prio <integer expression>;9 z# V2 a8 ~8 i* M7 E6 g$ a. M
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, |6 {# \3 }; {( W
以上为常用的函数!
4 a9 \: C; x! c还有很多,如有需要我把资料发到你邮箱里 ) F! e/ ?4 z: u) g W
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