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发表于 2012-11-13 08:48:12
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1判断语句8 x2 ]/ T3 H$ {& o. p3 _# U
if <condition> then
/ D# J/ |/ J- @* | @( U, l8 U9 f% D <statement sequence1>;$ t$ b f- [# F5 `' T
elseif <condition> then5 k. K! z( a# P }
<statement sequence2>;
( e$ K: o7 D, `6 D: \. @1 u else
3 ~; V3 k f- L- s2 b <statement sequence3>;$ r3 E, ]' G5 _3 I
end;# S" e4 e) Y3 A, i$ |
如果分支比较多，用：
5 {' u9 M7 P1 y% p6 D0 m& L' T9 A inspect <expression>4 r+ ? R/ {9 d& N4 y6 ^
when <constant_list> then! i. c; t) |4 d/ ~0 `$ }" D
<statement sequence1>;
# N D2 J6 ?1 c4 m when <constant_list> then( v* c; z3 t" i k
<statement sequence2>;
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else
$ N1 V5 f0 x9 [: q5 O/ ~ <statement sequence3>;
; n1 f' B2 L3 N( d- ^end;" P" d. b" _, B8 J$ T$ n& K3 n
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2循环语句1 T N% M8 _2 i. N) x: ^% A
(1) from <statement sequence1>
7 D" T) I# v; o until <condition> loop+ J g3 u/ ~/ W/ Q1 b9 l
<statement sequence2>;
! |; y2 c5 ~ I. C. D, m end;
9 h; I1 y4 ?3 s3 u; d5 r4 a (2) while <condition> loop
# z9 n3 X, T- ~3 B% s <statement sequence1>;! Z2 x7 h6 D! w0 q: g E
end;/ a( Z; O" }8 e" I' R
(3) repeat
2 T$ `( `8 s3 Q8 x2 c <statement sequence1>;% N, {4 c, J4 S! n( \* I
until <condition>;- K3 k! q: i" ^, w' ]( I
(4) for <condition> to <condition> loop$ L4 t* T. S ~% c) Z
<statement sequence1>;
0 f2 o, A$ a3 J+ m next;
& m5 y1 l& U. Q* h& o0 _3中断语句
: A, M9 \5 G+ g; E/ ? R waituntil <condition> prio <integer expression>;
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7 x0 F$ g; H3 b
7 O8 a8 ^& v O6 ?$ m以上为常用的函数！
8 m8 u$ D9 u7 y; Y8 _' n还有很多，如有需要我把资料发到你邮箱里 + N1 g; ?1 }+ C, z% d$ f' N
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