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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
3 x2 d3 ?& E) _3 y8 ? g if <condition> then9 |9 z0 {9 d) a7 v* R
<statement sequence1>;* b. e5 n' w6 h) ^" A' _3 a
elseif <condition> then
5 ]1 J; y2 k; @- X <statement sequence2>;9 g* X& @ T& I( x. n
else ) X/ I4 B3 Z+ f
<statement sequence3>;! S( c& q3 s9 F* w
end;, v1 n' P3 u; M0 N* ?. d! j
如果分支比较多,用:
/ }2 @6 f, i* o) ^. | inspect <expression>4 Z1 @5 i# o1 K' ~# M
when <constant_list> then
, \6 t( P, J+ V) s1 j <statement sequence1>;6 m+ f! b; W. N/ m5 v7 f4 C
when <constant_list> then
6 @8 v( f0 R7 Y9 d <statement sequence2>;2 n. o' h" R! ^2 ~3 H
...
2 K1 I* m' X( l; ~. n else
" {# p! Z6 z* X; L p <statement sequence3>;1 F; [& K: h+ w$ D
end;
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2循环语句/ O/ H- R6 M, N" z
(1) from <statement sequence1>
+ v- n+ s9 P+ P4 K7 V( I$ z until <condition> loop9 W" O3 A1 {" k" i5 ^0 x" c
<statement sequence2>;7 M3 M1 I/ w0 S( D
end;9 E9 u5 |4 `2 U Z0 C5 r0 {/ [& u5 [
(2) while <condition> loop# B* g* K9 q- @5 u9 V, T7 F, K( x
<statement sequence1>;
6 V% g a G% e4 I G. _ end;0 e* [( X* T( R% f# x5 N/ b$ @
(3) repeat & H1 E: n4 P4 i
<statement sequence1>;
- m1 Q( H2 {! F4 W% N$ a" c! a: Z until <condition>;
0 y* i* ~! e6 K (4) for <condition> to <condition> loop
! o) f% i' ?. f8 e4 e/ ]8 S6 s <statement sequence1>;% c3 e3 L6 G4 A) ]
next;6 b9 j. `- y* z$ ~3 u
3中断语句2 C, N2 V& o" c3 {! Q C- I
waituntil <condition> prio <integer expression>;# A% C& B1 v5 B6 B0 [
7 p, S" J, v2 A, o# M
" k9 C3 Y9 R1 R5 I$ a9 F以上为常用的函数!
4 Q3 e9 r/ j2 I4 m5 s, ]还有很多,如有需要我把资料发到你邮箱里 6 B5 U1 b' k% j: a$ v: {' e
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