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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
/ V% {# @8 u* h7 T! w/ X; W @* ~ if <condition> then
: v( _: ?* ^2 c6 q3 G <statement sequence1>;" H& Y+ M' C- }# }" Y' g
elseif <condition> then8 U6 V4 G5 A% R& T
<statement sequence2>;% z( n/ W+ ^( `
else 8 |0 P* I( _/ _/ W5 c- T) C$ ~
<statement sequence3>;: D& W: k: a, Q
end;' M; a" e, K9 J
如果分支比较多,用:
9 g, [# j H& I, @. R inspect <expression>6 s4 x: s S. B( ]( X8 S7 V
when <constant_list> then
/ O4 m# {4 e# i5 i2 B3 F. J <statement sequence1>;
+ k( x* D) L& y% x+ H2 ]8 @1 \ when <constant_list> then8 g% B0 a8 b* d( m* W5 y* h
<statement sequence2>;! Z7 k9 P# q6 |' r \! B, |' w
...
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<statement sequence3>;
5 v/ }: C% T: E7 _3 jend;
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4 h$ A- `9 J6 `, t" m2循环语句! E9 `* F/ J F$ |
(1) from <statement sequence1>" R# O4 W- Z- ?6 I+ Z
until <condition> loop; |7 S2 }1 r% ?
<statement sequence2>;
! [( ^ Z/ t, m H! m/ O" g end;
9 R( c5 ]# k" f; G (2) while <condition> loop
# S) X5 b7 h5 n/ c @6 n <statement sequence1>;8 D$ K" S: ]; X1 P
end;! _* }( l( n% c7 S
(3) repeat
7 |! ~; [3 P8 b <statement sequence1>;
6 Z1 a+ g2 S7 D$ o8 d: L until <condition>;
! h" \1 j3 r% v (4) for <condition> to <condition> loop
* c3 G) Q3 p1 c2 I <statement sequence1>;
# I9 X% V# p! v) ~8 Q8 o/ Z: E next;0 J# i: ~/ K9 H9 o2 \, E" h
3中断语句
; x1 T( y+ {2 w8 C& w waituntil <condition> prio <integer expression>;# E2 E& m7 [4 b% Z
q0 ^- W' B: y8 ?9 l
! |# L( z0 j/ S0 y; Z4 g以上为常用的函数!: u; S8 u1 }& @2 s
还有很多,如有需要我把资料发到你邮箱里 2 r* G- K( b: H
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