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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
! K- c! p, O7 X if <condition> then# Z. ]$ }5 `# n; E
<statement sequence1>;4 P$ C( a' T3 {; C
elseif <condition> then
9 X* M# X+ Q5 M0 S <statement sequence2>;
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<statement sequence3>;8 M; C; F; r- {" k
end;
6 N; q: @" p4 b+ e0 h. L如果分支比较多，用：
/ Z4 i7 r8 n4 i2 c4 J inspect <expression>
- B$ @4 ^/ W& o8 s6 {& t. U when <constant_list> then" P3 e, r8 n: d) [. l: o
<statement sequence1>;/ g. V8 E N+ G% I- l5 ]4 ` L
when <constant_list> then8 ~& w5 U1 D5 H8 y" h* \, c
<statement sequence2>;% O- N2 ^3 f/ M+ Y8 ?; J# X S m
...
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* P/ p; \8 @' O+ ~" `+ i, D <statement sequence3>;
& `: n1 f2 S- k# m1 v* P Pend;
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0 u; x! q6 |$ p5 C. s! I2循环语句
2 w8 p: o* K* y; R0 b: V (1) from <statement sequence1>2 s/ K! q2 s: j0 O! ^3 ?
until <condition> loop
7 v% b: R$ B( c* J <statement sequence2>;5 o m# T6 K8 I- a1 B7 P1 U; O% {6 Q; p
end;
' t' y' f1 P7 y; E6 Y& h( o (2) while <condition> loop6 w% ~2 ?' F+ z5 [0 x: w W. R
<statement sequence1>;
7 y* Q/ x+ y/ ]# l4 ?% ] end;
( e# Q# g' G$ U+ s4 ?3 s" M (3) repeat 5 [$ G1 D/ O/ p* P3 V4 ?
<statement sequence1>;) _2 D$ n3 T" q* J4 [/ F) A4 J
until <condition>;. p. R% u6 ?2 v$ \) x8 a
(4) for <condition> to <condition> loop: s: W$ {( M5 z+ C8 ~- k
<statement sequence1>;6 t5 N. {0 k- p" J8 ^: ?' |" `& x; Z
next;/ A; e) U5 `( I9 Y K
3中断语句
/ T& k; M8 W: R waituntil <condition> prio <integer expression>;
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+ M* \; M: f8 S) X
以上为常用的函数！# q' ~' r T7 S1 N
还有很多，如有需要我把资料发到你邮箱里 # }( E9 M0 R4 F6 |
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