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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+ F% m0 b1 a$ E: [, {! |$ m
if <condition> then
0 o1 B" X; A G, Z; S <statement sequence1>;7 }! @1 p3 u( l. k( _& K$ V v
elseif <condition> then" w4 j" U4 S1 I" w7 a" ^$ @/ R
<statement sequence2>;. {4 U- Z% N% G8 V
else
6 V# h# \# F" Y7 b" p& \ <statement sequence3>;+ _+ G2 I, x5 \2 Y- }
end;
1 C, I* `* Z8 P' H0 }如果分支比较多,用:% `2 C; K6 T( ^6 Y- l! [
inspect <expression>" @' H( {( ^2 r! u! s8 c
when <constant_list> then
+ B; m+ f: ]: G9 ~! {% ? <statement sequence1>;5 v3 @) L0 c6 E5 z& t/ v/ G/ u3 h/ H
when <constant_list> then8 S& Q' a+ U. T# _
<statement sequence2>;
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else" H+ O- r0 G- c" ^% R" j H; f% c3 x
<statement sequence3>;
5 F0 W. K0 }1 t, L+ H$ \1 x% Iend;
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2循环语句" ^* o# K% Z" n, s5 y
(1) from <statement sequence1>
) O% Y" H1 u m- ], V( I until <condition> loop& o7 v0 L/ _2 Q$ v
<statement sequence2>;9 ?, K( B4 v9 @
end;, A/ a, G K) I
(2) while <condition> loop* z* {. n6 L& q
<statement sequence1>;. _$ J! ]; w/ P8 ^& a
end;
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<statement sequence1>;
- K: j+ b# O; A until <condition>;
1 I- P6 ^1 y% p3 D (4) for <condition> to <condition> loop
) q/ r1 d$ i' w <statement sequence1>;, Q% l/ n. D! `& t: U: f
next;: N7 ], h" f2 ^& Z7 E; ?
3中断语句
6 G8 ^6 a, ]) z; O waituntil <condition> prio <integer expression>;# Q2 [ g. x! |1 ~, |& ~2 b( Y. E
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; S/ B; t/ ?% S3 \- F5 t" P以上为常用的函数!% W+ e" b( O1 E- Q4 U" _
还有很多,如有需要我把资料发到你邮箱里 7 U/ L+ ]) x0 y2 m8 ]* [9 |1 O- W
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