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发表于 2012-11-13 08:48:12
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1判断语句8 t' i- D% L! L
if <condition> then5 K. s# F" ]8 V, C+ B' ]
<statement sequence1>;
# J3 ]4 P2 |7 v. L8 A5 T elseif <condition> then
% m1 t; C) y% H* s0 A <statement sequence2>;1 X; H- b. }. @
else
/ r9 n' H& R' M% n+ a <statement sequence3>;
0 k$ G1 F( q% I7 y1 X end;
, w, w X- r- b1 G/ n0 p% _+ }如果分支比较多,用:. H1 t/ a, K" s. [5 G
inspect <expression>
* M7 J7 o3 `+ C7 F$ W when <constant_list> then
. C6 L2 h; K" p9 z$ v& S. j <statement sequence1>;
4 X# \. q' Q' Z" h- t when <constant_list> then! h2 q" Z5 m# D/ o
<statement sequence2>;
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else
8 \, j, g* v, b S7 t <statement sequence3>;, f- a# U$ t1 B9 ?- t0 L
end;
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' o. s" f$ Q$ u- V$ }2循环语句, }% j# g' C) g
(1) from <statement sequence1>
- G& z+ s& {3 B( _' K( S0 L! z until <condition> loop
5 p6 j) E% f& V) u <statement sequence2>;* P- j# ?: R6 x1 y" v1 P" h- o
end;
" s q* w S4 P- {8 [6 w @4 i/ a (2) while <condition> loop
9 w" a4 c7 k- ?( M6 g6 T <statement sequence1>;
& f- n6 k- |0 m q; l end;$ f! w# t5 I9 d4 h0 b0 |
(3) repeat
/ a0 w9 W0 K& @% ]" F) } <statement sequence1>;
8 u: E! t) `. P% a [$ @ until <condition>;
+ n2 n0 Q: p' l% ^ x' y (4) for <condition> to <condition> loop/ p6 u$ p/ n$ Y0 k6 U
<statement sequence1>;. j5 x. s1 j5 Y( K, R4 B2 o% |
next;
/ k3 V4 L8 q0 k! a: [8 n3中断语句. s! b$ z$ P3 N3 S
waituntil <condition> prio <integer expression>;
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以上为常用的函数!
3 i- p9 U5 R5 ]5 D0 k+ X还有很多,如有需要我把资料发到你邮箱里 3 \0 v6 r$ K( U& y! H( U0 m
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