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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
# o5 ~9 \2 L2 e( z- L& v4 V if <condition> then$ H# z0 M2 v7 D! M( Q
<statement sequence1>;, M: {; M0 ]& `
elseif <condition> then: N' J: e# B5 a9 B% C! [/ A0 h7 m
<statement sequence2>;, q9 v2 ?' |8 r3 `7 d$ x
else
! t+ D0 a7 L/ ]1 Y, Q; s1 ` <statement sequence3>;. V) R( o9 J$ m6 z. y
end;9 h3 U' K0 u+ j& q7 ^" K7 u
如果分支比较多,用:
3 \2 D h: o* m0 g inspect <expression>5 p4 T% k* d+ N4 ^5 F, c
when <constant_list> then, t0 z; E& V6 g r& \$ H
<statement sequence1>;+ K5 F1 }1 k P# F' m: S
when <constant_list> then
, P2 w& j/ w' W9 t1 u* m <statement sequence2>;; b8 ` t' w) I( d" o# A
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else0 J5 r, G: K1 ]) Q
<statement sequence3>;# M$ l' ], ^! _( r% b5 b, [5 i
end;
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2循环语句' Z7 }0 {5 p5 \
(1) from <statement sequence1>' m* @0 m, c+ A
until <condition> loop
7 F& j; R- b$ `7 C <statement sequence2>;& V3 d c/ d* R& g: ^8 X9 ^
end;4 d1 i; p( ?( d3 `( r# Q
(2) while <condition> loop
# A$ ~" ]" K' N+ J <statement sequence1>;
4 \9 b1 t& A" d8 A8 \ y2 E7 v end;
; Q. a5 @1 o3 `8 f (3) repeat
( {# |$ A, r* B8 @ <statement sequence1>;+ T$ b/ b+ m6 D* A9 J
until <condition>; Y' p( a1 U5 L- O/ Y
(4) for <condition> to <condition> loop
/ f" Z% f' g5 A <statement sequence1>;- A0 q W/ D# \! R6 E
next;7 ~: N5 m9 `7 W' ] }$ F" M
3中断语句
5 C0 Z, O- w9 ` waituntil <condition> prio <integer expression>;8 x+ I$ v. A* e% v- r B
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以上为常用的函数!; T8 p, T0 N" w3 `/ O8 |
还有很多,如有需要我把资料发到你邮箱里 $ a6 Y7 O, W- b# h/ b( g4 A
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