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发表于 2012-11-13 08:48:12
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1判断语句* O0 \' l& t, C# E# E1 |
if <condition> then
8 l" |. y& V: y/ e. V <statement sequence1>;
6 q+ @: w9 X6 Q0 a" W/ c$ | elseif <condition> then$ Z4 s" S$ U& _& t( b r6 R
<statement sequence2>;
* R6 W: F ` D: E6 V" R( Q+ @! b2 ? else
$ |. B6 k! V% [, R. ? <statement sequence3>;: X. Y. U+ \. e, f
end;. _7 C3 J) u3 p3 M$ |" y
如果分支比较多，用：4 n1 f6 p& {. P
inspect <expression># i5 D8 T# T# P3 D2 x0 e( \. w
when <constant_list> then. \: c' f* f; ?' a& ~9 L5 m" u
<statement sequence1>;0 [% b' W& k! x3 F' Z
when <constant_list> then
7 K- I- f: y7 H* v <statement sequence2>;
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else( s" ^7 k9 b' I( A E4 _
<statement sequence3>;& O* K1 T7 }' A; s5 R) X" b
end;
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2循环语句% ]* h) e0 ?' }+ s2 z0 p5 N
(1) from <statement sequence1>
- m, S3 x4 d8 c9 F P) ] until <condition> loop2 @& q' |7 g9 Q- s
<statement sequence2>;* t+ [4 h' }4 J, @; Z
end;
( k0 q4 J/ p9 F- _2 N (2) while <condition> loop* J9 u3 k; r" N# L! N+ p$ L6 L7 |- H
<statement sequence1>;
. x& m" G+ G8 Q V F+ ?) Z end;
j4 R; A! K3 A, K7 Q (3) repeat ' n6 ?" J& N$ U" v
<statement sequence1>;& O( ]) H2 A% u" V1 L
until <condition>;- u) {$ p5 y/ ^$ N: E, f2 }
(4) for <condition> to <condition> loop6 c% {) N7 O3 n6 F% n0 ]
<statement sequence1>;
. ~+ Z) p+ n; j( T( O5 D& V) r# y2 { next;) a _4 j! w3 }! R
3中断语句
1 c* F! K% }5 O! J! m' y! I* }8 x waituntil <condition> prio <integer expression>; J5 V, J% ^6 c
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以上为常用的函数！4 \4 A, U! q, I; k5 q
还有很多，如有需要我把资料发到你邮箱里 ! J; M% j0 W }" |) g+ o2 B
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