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发表于 2012-11-13 08:48:12
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1判断语句$ v' _! |- W9 L* [
if <condition> then" i/ e: J4 g5 P+ a2 A0 S) D
<statement sequence1>;. T7 d: m/ F& T$ U
elseif <condition> then$ D* ]2 {: E5 j, k* A1 X* ^
<statement sequence2>;
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<statement sequence3>;7 S. s+ c8 h0 X- Z% |
end;
# B' }& E( r( ~5 t6 y6 R如果分支比较多，用：
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when <constant_list> then
2 r' t. ~* l1 A7 W2 i, Z3 k2 u <statement sequence1>;
" N1 h3 |7 J( N0 T1 m6 C6 S6 ^ when <constant_list> then! h# o4 x6 E5 p( M5 I
<statement sequence2>;
2 D: w: |! I, r. @# t5 s' t ...
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<statement sequence3>;1 z: h1 S& B: w7 P, {8 o- E
end;
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2循环语句( F% }& L* d" ^! B, X2 \& F- R
(1) from <statement sequence1>
# N+ g7 \2 A" j) M6 g1 n2 t until <condition> loop+ y, P+ s# d7 e; ~) I W6 r
<statement sequence2>;
& o( i2 B, D* k, |3 m$ H R# | end;# I r( \5 A8 |7 U( b
(2) while <condition> loop
0 q( m2 ~/ I( T <statement sequence1>;
# H7 w( @ z/ F$ b/ j. P* C1 a end;, `4 x! F9 Z/ r9 ^# V/ T1 W
(3) repeat ' U M6 e4 f2 t) i+ H1 e$ z+ H2 `) m
<statement sequence1>;/ r- z- s* O! v" \" Y! b* h
until <condition>;
5 \- W5 F$ v5 z3 d5 x (4) for <condition> to <condition> loop
) @- F/ u5 E- i( e3 ]- v; C <statement sequence1>;' ]4 d% z% F: S1 c
next;4 L) ^4 Z/ F% _
3中断语句; k3 d* n: b+ _( m
waituntil <condition> prio <integer expression>;% p; M' v) L+ G- }. H9 M
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以上为常用的函数！5 ~8 R# x9 @% S+ s
还有很多，如有需要我把资料发到你邮箱里
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