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发表于 2012-11-13 08:48:12
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1判断语句
- O6 s9 n1 t+ C0 ^8 e if <condition> then4 {. o9 o5 W6 n& q+ c" U1 J
<statement sequence1>;
; c- C; m4 E3 o( H( \$ Q+ x- L5 z elseif <condition> then, `# _+ J% z B+ ~2 y7 H
<statement sequence2>;
! w* E) Z3 D; Q$ ]& u else
5 @" X! z+ ^) W* B8 |( a; C <statement sequence3>;
5 N% u! T- n& I3 [( H1 e/ j& [ end;% J! @7 g, q) a+ \, d
如果分支比较多，用：# s, U$ @- s1 ^6 e. O8 _. T3 O
inspect <expression>
5 F$ K& H0 c. U& ^+ a. B; X4 f when <constant_list> then
9 R9 V* V+ {) p# C <statement sequence1>;7 N: \- Y2 W, t. E
when <constant_list> then
6 B; o% Q3 G" f <statement sequence2>;# j: b. k8 r4 h* L \% K x6 E+ M
...
6 y- q. M- h1 |. E2 n% j else
6 B- z; w% A& P <statement sequence3>;' T* W9 F3 n' X4 z( h% k
end;
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2循环语句* `( C) X( d2 ?7 ]6 w2 L
(1) from <statement sequence1>6 I M* B* y. d. K
until <condition> loop$ b7 M4 d; i4 D2 _1 ^! K. c6 _
<statement sequence2>;; B" B6 N0 L5 B: Y
end;# ]" a/ O T3 K' b3 b7 m
(2) while <condition> loop
& U/ o4 R% F# i* T; y" _ <statement sequence1>;
1 j8 k+ R* e3 Y7 r) m; I end;
- G( P' ]( r. r, S (3) repeat
+ ]% t8 U! ^# [% Q <statement sequence1>;
4 I& ?7 N8 P9 \8 ~8 b* A until <condition>;
7 {- ]( U: `" ~4 l3 Q" O (4) for <condition> to <condition> loop
7 V9 ?$ k& g+ R8 l# c <statement sequence1>;) ]; Q6 r. i* g9 H4 ]. a( J' k+ f
next;3 y7 H& Q: F( J9 I2 ~; @$ g) Z" x
3中断语句4 s. P: B3 x# Z; k
waituntil <condition> prio <integer expression>;
+ k1 J$ F: h+ y1 s3 l- q
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以上为常用的函数！
" | y( B& Q7 C3 X/ A4 N& m& }还有很多，如有需要我把资料发到你邮箱里 . u3 D5 \- i% U( M' \5 C. @
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