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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
: |9 O" Q( @; [4 x' L+ ^* t if <condition> then
/ x0 P( Z( H4 p: T& W, z <statement sequence1>;5 \6 M/ |/ |: l. j
elseif <condition> then
' s. w$ G2 o; s <statement sequence2>;
+ \( D0 s7 x' [! \! V5 a: \! O else ' ~, V+ P5 R+ r# R! n5 l
<statement sequence3>;
" @0 H6 \. ^! F end;
6 _3 @0 \* O: s/ T1 I' b/ R! e如果分支比较多,用:: q' [6 B% m9 S( K9 r# U- g
inspect <expression>. U) ^1 E4 I! B) B
when <constant_list> then
" G. J, p. \8 H7 ` <statement sequence1>;
b0 a9 v$ h( V when <constant_list> then* I# N+ R5 Q, {+ @) J9 L9 ?# [
<statement sequence2>;: x$ _4 W& S7 \: w8 L0 h
...
8 b/ I2 \; E8 m" I) X1 L else
- U. A9 f. J& m1 X! {9 r+ l4 ^6 V8 k( ~ <statement sequence3>;5 F! j2 T( r# V
end;1 [0 ?- C4 ~/ \" W5 i( H- W- R$ i
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2循环语句
{% U: J/ S5 ~5 R: n# W (1) from <statement sequence1>
! n5 u- V c, A" x# Z# g. E until <condition> loop9 Y) ^! d, i- Y8 D1 |, S
<statement sequence2>;
& J3 C/ H8 W" b* L2 S1 R6 c end;
1 G) C8 A7 j2 k7 _2 g2 I+ y9 M2 f (2) while <condition> loop
m8 T$ W5 H6 j4 Z# ] <statement sequence1>;5 U' A5 `1 a ]7 F" y3 i& p% Q) L
end;2 @% p" E9 I% [- Y8 T; P, `5 s
(3) repeat
/ L* c$ H& a) l1 A3 T <statement sequence1>;4 b8 M5 z4 G, @/ e+ r8 l1 |
until <condition>;8 ]- U# r. P/ t. p; b
(4) for <condition> to <condition> loop
1 d+ i; g( }5 I3 o7 N+ V <statement sequence1>;$ _) n# ^6 o! r6 o4 h" b
next;8 V' ^ S& u& M! K9 x9 S
3中断语句
1 U O: V) x2 s; i- T1 p waituntil <condition> prio <integer expression>;
1 ` |' @6 l0 ?: f5 b0 C- P3 D5 w4 t. ]; Q
8 N- C2 g7 M; R% [以上为常用的函数!" u( O) v) ~9 [% U# I F4 `+ \
还有很多,如有需要我把资料发到你邮箱里
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