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发表于 2012-11-13 08:48:12
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1判断语句: J$ U/ Q9 G P" C
if <condition> then
9 s. t0 |) ^) Y1 G1 U <statement sequence1>;
/ }, V* g! j% V( H2 K( q( \ elseif <condition> then
! i0 \8 G, _9 k" [6 X/ C <statement sequence2>;# v" |1 A. P4 E/ @! b! q& O
else & C' u+ C/ Z3 s5 H w
<statement sequence3>;! T. X$ m$ f0 n4 f/ M7 b
end;# V1 g: G9 p1 Y: S
如果分支比较多，用：
+ q/ Y* N x# {6 E1 O inspect <expression>
0 `( \' f( G5 {8 Z5 W when <constant_list> then
( ^0 X4 w1 P% e$ C" j* z <statement sequence1>;
6 s# K: n5 `# Y6 _ when <constant_list> then! f) s& b/ L: @) Y3 B* o
<statement sequence2>;$ r9 o+ ?; A6 N6 ^
...
# d6 t4 s2 b; B$ n. K8 X* i else+ U2 ?0 @4 C+ v- F. N8 M
<statement sequence3>;
, o, S0 h' R$ Oend;% S X( G3 o( L+ W5 N
l+ R& [5 u$ M2循环语句/ F; C6 O: Y# R" l# N2 p! O( e6 }
(1) from <statement sequence1>
& x8 B/ e1 i% a( O" {, W until <condition> loop5 G1 `# K$ ]7 T, e& _# y) `( T
<statement sequence2>;6 T. T U/ W7 l" l. F5 y
end;
3 q, z! t; E% ~ (2) while <condition> loop3 D/ J% r- ~8 f8 }( i4 x, t
<statement sequence1>;
+ Q. `# `1 o2 y @8 r end;
/ G2 s' N* Y7 J$ g5 u (3) repeat % b- C+ T W+ I! G
<statement sequence1>;! m# G' a7 j8 G, r
until <condition>;, R2 C0 Q0 o2 K) u) J/ ]
(4) for <condition> to <condition> loop
# T8 i+ K1 }. H <statement sequence1>;
$ B7 L4 T' [1 S7 n& g) [# {& S7 x next;7 V* L6 z/ q6 E
3中断语句* O) r4 J# O6 z5 }, U$ |( s6 N/ u
waituntil <condition> prio <integer expression>; ^ D/ Y: ~: `/ @1 h# r1 ]
; e9 F c/ N. ?* d6 i) }* N. H
- C2 ~. b) d N2 s2 x以上为常用的函数！5 c; c# ~0 e1 s
还有很多，如有需要我把资料发到你邮箱里
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