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发表于 2012-11-13 08:48:12
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1判断语句" v2 f; W0 v7 u- P7 ], C4 h+ H
if <condition> then6 ^! F; h; s- p1 }. F0 X$ w- j' e* z
<statement sequence1>;
- r. D, @& S% k8 W) r elseif <condition> then
9 _" f% y# u3 [; |5 b4 L <statement sequence2>;2 y' \: p. Q; Q: H4 ]
else 1 D6 b$ g% \# B4 X" ]) r; c9 G, d# ]
<statement sequence3>;& S" {' u# h3 }
end;+ @% L: C( `' E8 R% B
如果分支比较多，用：
9 @* D. a- ^. ~& T: K% Z$ r _ inspect <expression>
: u( k' @9 f( g7 h3 a when <constant_list> then) y. ~! q& h8 B) p, w2 L$ |
<statement sequence1>;
9 S. o6 M3 Z( J, l/ I; F, i when <constant_list> then5 l) x8 s0 h% C5 ]6 d( R- D- O
<statement sequence2>; z7 y, R: c" ^5 K T8 m
...
" d7 _4 Z* A: T& g s( A else
; R& u# f) O2 @" o <statement sequence3>;
* H0 h7 k; A$ f1 eend;* [8 ^9 c' F8 U- B! y
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2循环语句& D. ]) @$ U6 p/ |8 @
(1) from <statement sequence1>4 _4 p- s, n5 r4 V6 O# j( d# u
until <condition> loop3 W* r7 z7 J$ M4 U# T
<statement sequence2>;9 l" ?6 D8 g/ r+ p) K+ P: z3 ?
end;8 ^. }$ Y) ]% r! `
(2) while <condition> loop) t! K7 G! r% S
<statement sequence1>;2 E# O, b$ F. y1 K# W* u( n
end;
& N: l$ I9 Y/ E* D. H (3) repeat & x' s/ r% N& I4 @0 g* Z! ]4 K, k
<statement sequence1>;
# }/ `3 p- Y+ `7 b- n4 l: K/ U6 S until <condition>;2 I% g; K6 |1 F
(4) for <condition> to <condition> loop
& a4 e1 W5 X& `. D7 c: I6 ^4 @ <statement sequence1>;
* a- c# e0 ?9 g next;1 H2 l( p) h1 ?' J9 d. b
3中断语句
9 E/ p: {4 b. _6 i waituntil <condition> prio <integer expression>;& W9 `( s5 m q$ ^% E
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以上为常用的函数！' r$ r* \! L2 z# ~- T9 d, J
还有很多，如有需要我把资料发到你邮箱里 % H2 J. Z2 ^! a8 P
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