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发表于 2012-11-13 08:48:12
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1判断语句+ J. A7 N4 z- M' T4 M- |; B6 H
if <condition> then
' K- f7 ^; n+ N, R1 a8 N <statement sequence1>;+ S5 j- x) p+ _6 q1 @$ `7 F3 G- `# E
elseif <condition> then% P( j. a# ~+ g- Q7 U s! H3 k6 G
<statement sequence2>;' o2 ^( i' b% r) d* F$ D' Y3 ~
else 9 F# o/ c- i2 S+ f6 i
<statement sequence3>;2 Z* }1 ], r& v. d) k4 X
end;
& _! }" } v$ W$ j* t! m* _- C, q如果分支比较多，用：) d5 s8 g! x% ^- I. L
inspect <expression>; t& l- D" {3 O2 ]' r( ~& Q( Q
when <constant_list> then
: S! V+ X$ K. [% \ <statement sequence1>;
, W# r+ E" A& Q when <constant_list> then; r+ J* D4 Y3 Y
<statement sequence2>;+ F/ z7 g/ z* c1 ~
...
& {5 r- s% U9 j+ t% W" k else: p! e4 g ?) i; ]) `4 p1 L8 B0 }
<statement sequence3>;2 E: R# J+ Z' N0 s' w1 b
end;
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2循环语句
1 W) j1 U/ a- ]: c9 |& o# g (1) from <statement sequence1>6 D7 K" {/ M. v }
until <condition> loop
8 l5 K6 z {7 A N# E. h <statement sequence2>;" b a+ k$ G* C! h2 E# i
end;7 ~! n* l" B6 [% y' |* a
(2) while <condition> loop
+ w" ?* x- w' N& ~ <statement sequence1>;
- z- K5 x( w( P$ X9 o2 B end;
) C( }* U. h$ Q ~1 b (3) repeat & o9 h4 U, Q0 |" X0 E
<statement sequence1>;. Z& E; M3 ~$ z& X, b$ o0 l6 @
until <condition>;
d! q! _! m( E8 e2 q3 g (4) for <condition> to <condition> loop- W7 X! K6 u5 |0 r& Q# ]
<statement sequence1>;
1 w! E& B! U7 d% U' ?$ @( g6 I next;
, X* m6 |1 W$ C: l' a5 A3中断语句3 V! S6 s4 H+ x! j7 d) p6 m- ~' O
waituntil <condition> prio <integer expression>;4 H0 M* k- ^( T! p5 B+ v
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以上为常用的函数！
, X# c& d3 ]% @还有很多，如有需要我把资料发到你邮箱里 ! g; _& @1 v# ~ j5 k+ k' Z0 e# i
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