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发表于 2012-11-13 08:48:12
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1判断语句# `6 p$ T( }/ z4 y$ L$ [
if <condition> then1 @$ H( Q1 K2 Q& c
<statement sequence1>;* i0 |" ~; U) e
elseif <condition> then
7 q. s# E5 J! r/ ?. i! b8 h <statement sequence2>;
8 a& k& m; u4 H( ^0 X m! Q2 } else
5 M, @1 s1 p5 l1 k <statement sequence3>;+ \; L( S/ R! L! O9 N
end;
4 s/ C' X" u$ w, \' Q- o5 C: P7 P如果分支比较多，用：, x# i0 | W4 B# A, c2 E* x, p8 F) L7 _" H
inspect <expression>% f2 a: ?) L5 N; C; B4 Z
when <constant_list> then
, ~$ L0 ?5 {. {3 Z* ~ <statement sequence1>;
% t9 r% h8 f- P' _0 Q when <constant_list> then
" p# @/ w( P/ ~: @3 y <statement sequence2>;
2 _) `# M5 [- m2 n ...
+ ]5 D- R# Y k7 k$ }, _ else
8 c9 `; S) ]5 p7 J. r <statement sequence3>;% }) z) X# d0 w# m5 M9 C
end;# S( M0 V3 o& e4 p# B$ v3 z" ?
6 e# _0 S0 X- M$ w2循环语句* c; M# E( Q; f P; k
(1) from <statement sequence1>
' H( N' C/ k2 Y {# ~" O until <condition> loop
f Q0 |0 \" x& M! Q+ U <statement sequence2>;
+ }% G/ |( k% l7 U end;
& S% B9 d; g- F6 @5 o% ]) p) n (2) while <condition> loop1 [& G: M* S- o8 U
<statement sequence1>;
" g9 G! Z7 {+ u/ `5 V7 L end;, G: _0 l5 u; q
(3) repeat 0 d4 g9 |7 p# E% F: m" n4 V
<statement sequence1>; k7 F3 O: Z5 w: T' n, H
until <condition>;& t9 Y. I) z( x9 Z
(4) for <condition> to <condition> loop/ O4 Y# k. j! V# P/ q/ [' j5 |& I! h
<statement sequence1>;" E8 _1 H1 C4 O& G' O. G3 I D
next;# w9 D' F0 Q. N% X2 ]
3中断语句
. ~+ W2 M& M+ u- X1 [) q% ? waituntil <condition> prio <integer expression>;
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8 [, t+ l- B( P/ i& \% m
以上为常用的函数！
+ A' y1 ^- r0 Y还有很多，如有需要我把资料发到你邮箱里 - x, T, o4 Y0 N4 Z
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