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发表于 2012-11-13 08:48:12
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1判断语句& M: o; z% U4 Y( S
if <condition> then
' t0 N9 X' N4 ?- s- M) F: ~4 k <statement sequence1>;
4 z* K! N! j. C2 @/ Z) [" ~# D elseif <condition> then0 l7 l. g1 A. X4 o. R, O8 ?( h
<statement sequence2>;; l' g8 h& @+ k
else
- }8 n: m* t6 E3 g2 Q <statement sequence3>;
; f. c. s5 r3 x3 o9 n end;
: h+ G! O1 ^ D2 o- c0 A0 n如果分支比较多，用：3 J+ T, }; b1 `) n: O Z
inspect <expression>+ k/ T, r0 e% f- u
when <constant_list> then6 R' F& A A2 ?; t/ v4 ^: X
<statement sequence1>;
L' i1 a9 x8 B( ^1 } when <constant_list> then
( ^' P9 f4 w3 a& q& E( J <statement sequence2>;
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else
6 ?- T G Q* o d5 z <statement sequence3>;
]/ i( t" v/ W: ^6 n4 t# f4 D' kend;! F. g. u6 ~2 ]
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2循环语句8 R6 H! ~( V2 T" B
(1) from <statement sequence1>
1 N& o& O8 [) R0 F- t' c+ r until <condition> loop5 y+ W7 c8 A' S) @5 j7 q; z
<statement sequence2>;; z0 n, y& {" l" k, F& ~
end;
0 _3 C) [) n3 J7 L$ N4 R& Q" ?) F% \ (2) while <condition> loop
' O& s. _! b/ F: C0 | <statement sequence1>; }) s# F* q$ s. N* y
end;
: o, m+ ?# r" P8 I* q; c8 Y/ g) a (3) repeat 9 H8 h' t$ a/ E# d0 k
<statement sequence1>;
' b% I+ M9 a1 I" p9 S3 R until <condition>;
! a4 v0 J* o* L0 m5 k (4) for <condition> to <condition> loop3 @+ f1 T# {4 t7 X) {; K6 f# U8 S
<statement sequence1>;+ S: b; I; t% r! P) t a
next;
5 Z! o) o+ E& ~3中断语句
6 _0 B2 X. t; ^. H& j0 N waituntil <condition> prio <integer expression>;
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+ I# M+ ~3 }7 m/ @: r以上为常用的函数！
7 B& O% A' T3 Z6 g; y9 i, h; R还有很多，如有需要我把资料发到你邮箱里 # t* T! d# T2 L
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