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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; H) o& `( |4 X/ S
if <condition> then
R1 `+ L% c$ I9 w* H# N1 W, g <statement sequence1>;
% t7 }1 N4 r9 t elseif <condition> then
5 ]/ q. a. p, C! ~5 p <statement sequence2>;3 Y1 C7 A% x' j% {9 ?, t+ f
else
0 Q" g) o7 X, t( ? <statement sequence3>; x; w0 z) T2 P- R3 @
end;# x- ^* B9 [# f9 \3 X
如果分支比较多,用:/ d& J3 V: |, E2 d9 A
inspect <expression># P8 ?9 F' m1 f( y* k" C4 e8 h
when <constant_list> then( P4 \2 I, [4 [9 y! g
<statement sequence1>;
. ~' A0 h+ M' |2 @ when <constant_list> then, |+ W; J, r0 p* H: s
<statement sequence2>;
* I1 | Y/ K) v ...
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<statement sequence3>;
$ {( G, j8 \% o! F1 pend;
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2循环语句4 M. v5 ^' m1 R
(1) from <statement sequence1>- t1 X1 R: |- L( C
until <condition> loop7 n) x- N7 s9 ?: J
<statement sequence2>;8 S4 c# O/ |/ O# x! F$ T
end;8 y* E9 W- H I
(2) while <condition> loop3 C+ B. ]5 \; c. k+ Y
<statement sequence1>;- f3 [4 m0 L/ j1 Z; d4 a. d
end;3 e3 C1 j6 {6 e" `7 F
(3) repeat - i( j+ J) t; q7 h+ S5 ^( j
<statement sequence1>;
# E& `9 A' A" p9 l( Z until <condition>;
- G. v8 {* R5 _0 @: c: K (4) for <condition> to <condition> loop
* c K, v. a0 W' Y <statement sequence1>;
: J/ w4 k G+ ~4 ` next;9 i4 ?" I- T' D4 ^' g, d
3中断语句
, R% z$ {/ k/ W& f5 e% s) _# _ waituntil <condition> prio <integer expression>;
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以上为常用的函数!0 p) G( _! G4 c a# J
还有很多,如有需要我把资料发到你邮箱里
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