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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
" u4 F8 y( `3 g% F if <condition> then- T* p9 _+ A+ B7 ~) |
<statement sequence1>;8 T% v' j* e. @; k0 G; O) r
elseif <condition> then
/ }- d! N2 }7 {6 Q8 i2 ~ <statement sequence2>; G1 }/ a' W& d, [. r
else , \2 x T; J* ^% c& s, q* {
<statement sequence3>;9 s, {* W/ }: u+ c6 P
end;
3 [" F" I" I5 L. E! e如果分支比较多，用：
, ^8 [) Q. A% f8 b inspect <expression>
" T2 W) W) b3 P* x) V when <constant_list> then) m# R; e5 ?- l
<statement sequence1>;
) ^7 p9 L7 L# }0 K when <constant_list> then+ T$ Z0 x! y2 G! m1 U9 r# |' V8 @
<statement sequence2>;
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else; p5 k) R. h. n' }% M. `
<statement sequence3>;3 }) u3 G& Y. [7 B# P' D
end;8 [8 }+ E6 z" R! o
. }9 X4 J- N" j5 L. }# ^* o2循环语句' d3 {! @2 c: ^2 J
(1) from <statement sequence1>+ W" G8 p, x( h( @
until <condition> loop
4 C; H3 L2 U4 V' ] s5 z3 G+ f) P <statement sequence2>;. C' q/ T/ `; J3 N9 T
end;
1 Y# P6 r7 U' m (2) while <condition> loop
# o! X" x0 k- c% n) E% T* [! [ <statement sequence1>;3 e& t3 G& {8 u6 m
end;% Y$ b+ W" R @/ n0 W
(3) repeat 0 [4 ^9 E0 S/ z# A0 M) k( d) \1 B
<statement sequence1>;* r3 ^9 ], t1 v
until <condition>;9 x0 n) K7 ^# {* v6 l" a1 q( Q
(4) for <condition> to <condition> loop# T0 m& ~+ [6 l7 x0 \
<statement sequence1>;
$ ^" u7 I+ W, g( T" r# P+ ?' r next;" Z2 N2 c' T1 Z7 G) }7 x# p( ?
3中断语句
7 U' A# z v1 d& X( ]; | waituntil <condition> prio <integer expression>;
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以上为常用的函数！7 [. p# V/ { u0 G& s7 o
还有很多，如有需要我把资料发到你邮箱里 * `" n( T) w' X1 X6 N! r
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