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发表于 2012-11-13 08:48:12
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1判断语句
' s! C5 |+ A6 l. F if <condition> then) S$ p# U& ~- x g5 [) }' X
<statement sequence1>;
/ o3 r+ S$ ~5 v6 @: ^% {/ X elseif <condition> then( J: B) ]+ L: N M: ]
<statement sequence2>;
7 j7 h5 @ m+ @ else
/ F5 s! S1 y* ^ <statement sequence3>;
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如果分支比较多，用：
- W! m2 ~; b' L/ d) N1 b% }) f* \ inspect <expression>
# g7 g* G* ?6 k1 d# T- c; G% a when <constant_list> then2 W5 B2 Y, e+ P( t. z+ H
<statement sequence1>;
2 m& i# [" c% T) a when <constant_list> then
2 H" J% ?, |* I9 ^1 [7 z5 e1 N9 I <statement sequence2>;( ]' f- M/ y3 w6 J
...
9 q1 R$ B2 X S else
- \7 L( }1 o4 i: S# x <statement sequence3>;% l" m7 t" d1 Q# v3 Q$ ]1 h( C
end;( P2 e) ]! F6 t% S7 ^; G
7 ~: b T2 g& u$ s4 ^0 Q" m2循环语句& D7 j/ T f, F) h7 F: J
(1) from <statement sequence1> U0 R2 l& q$ d# J( ?3 Y
until <condition> loop
- k: y( [' k6 q* \; M <statement sequence2>;
+ N9 k4 X. t: `5 e+ k7 \8 R end;7 Y8 e9 c/ ^8 x% Q
(2) while <condition> loop
6 \0 ]6 s) {: F( Z% `- Q <statement sequence1>;$ c6 u. ?4 x2 H$ r
end;# q, R" a( V: Z n3 x0 {, ?! F
(3) repeat 8 v% n9 Q4 t. ?' A' n% o
<statement sequence1>;0 _# j5 V. H) D2 i9 e% X2 G
until <condition>;
0 N' z1 Q2 X3 H& O (4) for <condition> to <condition> loop3 M/ O3 P' w5 \ u: _
<statement sequence1>;
U! _/ _) v$ L* p" m next;% e: W) e4 C6 Z1 _" {; i) v
3中断语句. P7 b! J( Z. U$ i
waituntil <condition> prio <integer expression>;
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, v+ F) b$ H) R以上为常用的函数！! ]' S9 M# h' ~. D0 Q8 }
还有很多，如有需要我把资料发到你邮箱里 3 u* V3 U+ G* R; E) D1 x
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