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发表于 2012-11-13 08:48:12
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1判断语句" s$ `; A- X# Z
if <condition> then( m6 k" K% r, v/ j9 ]8 k8 m# e
<statement sequence1>;
4 l" g& |4 n& K) J( @. Q: X$ l elseif <condition> then
$ ~1 ~3 ?" u: @3 z <statement sequence2>;
, V( u- f2 R f8 n7 K1 w else
3 v% z1 X" g! G6 H7 Q <statement sequence3>;
) {( G3 R% Z6 b$ ~) \ end;
' L% H3 U+ R0 w5 p3 [, b8 T/ m如果分支比较多，用：
; Q" f& V' n. f3 t inspect <expression>$ c: b. ~3 M" Z$ S6 l
when <constant_list> then( T" K7 ~& Q% k: v
<statement sequence1>;6 i, m9 d7 _& h+ r
when <constant_list> then
9 ~& P9 F4 x, c8 O: v* O <statement sequence2>;. j% ^5 i% u4 }+ k
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else
' @, q7 L% t. O: J {) y <statement sequence3>;
6 A9 `6 i$ p: p/ I+ x- j! m, mend;
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( |6 k6 \; V8 J. `$ o2循环语句# |& k u9 J- m# [3 o' s! f
(1) from <statement sequence1>7 O) i% Z6 B# t+ {
until <condition> loop" r' ^2 G F1 ~9 X, V2 t
<statement sequence2>;6 Y& H+ n* G4 V2 R9 [+ ?& Y
end;# l7 n' L( {: ^+ z& C. F- s5 c
(2) while <condition> loop
6 C9 |/ X; C1 N3 T( g0 j <statement sequence1>;
2 V5 Z3 c6 m$ @: c, b% r2 u end;5 K# ^9 w: a* s$ Z4 q$ u
(3) repeat
: C$ V o4 T* x1 f$ G <statement sequence1>;5 ^# Z0 C' P; n& ~
until <condition>;
: Y& n9 F- N f3 m5 Y$ ~9 h9 a (4) for <condition> to <condition> loop
& A! w5 T' y8 E2 W% V' J <statement sequence1>;
1 X- o' \+ _, X' V' ~ next;
, [8 R7 |4 L9 q3 x1 p3中断语句
F) X' _. @ h0 q' E waituntil <condition> prio <integer expression>;
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以上为常用的函数！3 ?+ T; d& ^/ W+ j4 i
还有很多，如有需要我把资料发到你邮箱里
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