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发表于 2012-11-13 08:48:12
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1判断语句4 P9 x! p* I2 @0 `7 R: v
if <condition> then7 a" U* n. k. w3 u1 _" p
<statement sequence1>;% n- Y6 _/ ]2 l9 n, y6 s' x! e
elseif <condition> then* V# Q# p( ], @( q/ h- d: p% z
<statement sequence2>;+ i, h7 J. N5 L
else
# a. |/ S8 }& `, X4 h <statement sequence3>;
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如果分支比较多,用:# G U* p4 s. S! V
inspect <expression>
* q/ O+ ^9 z j" i L+ G" k( F2 | when <constant_list> then' w* \/ L1 k3 z7 \7 ?
<statement sequence1>;+ O+ ~3 `" Z& K3 @% p2 B
when <constant_list> then% v# R6 o; O4 l- }
<statement sequence2>;
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else/ D* k! T5 S8 v' n/ {) d1 e, F
<statement sequence3>;
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% c; a. }3 M; r# O S; J$ W8 z2循环语句
, e( r' P8 O) f7 t (1) from <statement sequence1>5 b, ^& O3 v- t, K7 h$ |
until <condition> loop
$ l3 o7 V Z8 `9 r* w- f <statement sequence2>;
x+ p8 A, B8 C5 w% E( e end;, m( x- z/ ?. K& ^ ]& h. p
(2) while <condition> loop. r, o4 T# `# e8 d- g% x
<statement sequence1>;+ F7 j& R) r+ Z7 X$ b, r7 ~) A
end;' p9 z( Z+ j& \; U1 T7 ?
(3) repeat
: M4 K4 E E5 A$ n' p& L3 S <statement sequence1>;
2 i9 E, s& x9 O3 f( O' i1 { until <condition>;1 q- O/ g X5 s4 {' Z- t$ I
(4) for <condition> to <condition> loop
9 v2 d5 I0 J% T( n: P <statement sequence1>;3 a2 F) V4 E' O5 [) h$ E
next;
1 M7 ^1 n" |0 s2 |* v0 d3中断语句
3 k- M5 X: \' s4 e; \1 ^( Q waituntil <condition> prio <integer expression>;
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以上为常用的函数!
z, m3 n4 n# X' \还有很多,如有需要我把资料发到你邮箱里
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