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发表于 2012-11-13 08:48:12
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1判断语句 d9 \# W; A' `/ o% J' U" R6 y
if <condition> then9 X# V1 U9 D$ e
<statement sequence1>;" H2 ?( ]4 @* y. Y
elseif <condition> then1 G. d7 A0 ]* G4 Y$ O: `
<statement sequence2>;+ b8 \& r$ S1 Q! ?
else 3 d, q. h7 A: [; U% D6 f1 ^
<statement sequence3>; C$ X! p2 o6 u6 F, j0 C5 |
end;* Z9 }7 x, q" F( T2 u$ W+ e+ L
如果分支比较多,用:: L& f. i3 I2 u! F1 X
inspect <expression>1 J% O9 F: [ Y9 D
when <constant_list> then3 V) I$ `5 @2 B# b" c7 E( f
<statement sequence1>;5 v- k% M( G# h1 X4 u# {7 X
when <constant_list> then
8 W3 p, {% i* `# J) O5 o <statement sequence2>;
0 @, ~7 j+ n9 S7 b: A! Q+ f) y2 ~ ...
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<statement sequence3>;- @& u: |- E9 T" x2 [5 R$ R7 y
end;, B/ F! q" B! S: M; t
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2循环语句$ N5 j, h$ |; L! \3 E7 X1 F* D; G
(1) from <statement sequence1>$ p! F& I/ v' _+ R7 [. L& k2 |
until <condition> loop- f. Y$ W6 y- q W: y) _6 p4 V. H* |
<statement sequence2>;
- ^' n8 R2 B! S1 C7 w/ F end;
5 L, V' y- s* v (2) while <condition> loop
1 a- a% z- q2 G4 `6 c, ~( J. B <statement sequence1>;! R& Y( y' j+ {
end;/ V8 X" Y/ c6 X. K/ L
(3) repeat 6 G$ S4 }) z& T7 @: @
<statement sequence1>;
$ _6 N* \5 M/ c+ e: d" A; d. ^ until <condition>;, _' A R* V2 T! h" K3 |4 X3 K
(4) for <condition> to <condition> loop
( X1 B0 } ]# C9 G) \ <statement sequence1>;( G% q" B! j( ]6 h) N* b' A
next;
( t7 y% i, y7 N& q9 b- g3 x3中断语句- y0 K; r; o& v" e
waituntil <condition> prio <integer expression>;
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& C6 N6 s. l q2 s# k1 n/ W以上为常用的函数!, a* X N' ]7 e/ n& `& {: p: i
还有很多,如有需要我把资料发到你邮箱里
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