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发表于 2012-11-13 08:48:12
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1判断语句" p4 f' L: R% J9 d- e6 R- \9 q
if <condition> then
- F0 f+ N R8 n( u* o/ a: W: e! h. c <statement sequence1>;
9 x0 j) s" h: D4 [( A$ @6 G o+ T1 H2 B elseif <condition> then
7 |% }) D" @ O3 U5 w& P4 u% \ <statement sequence2>;
" m' `* L2 Q& b( y6 `5 Q" l) j K6 p7 g. J else ) M% [7 c z0 t% F/ X
<statement sequence3>;
' M6 }, z/ B- Q+ I0 ? end;/ x7 z/ T# D2 F: ~ `
如果分支比较多，用：
/ R, _4 t! j9 t4 c3 b& s' ` inspect <expression>
& b) _: _8 C& W* f/ Q when <constant_list> then
1 I+ H9 n2 y1 d <statement sequence1>;6 Y9 V1 J: H% m% H8 I
when <constant_list> then
@6 t# [7 ?% _0 h% U$ P+ d3 j# e, J <statement sequence2>;/ g5 L* U$ e7 w
...
- S$ A u1 _) b/ e ^ else
# {) h% D$ K3 |: t1 \2 ~ <statement sequence3>;0 h2 N1 J7 a2 W" j+ |; X# T/ g, `+ M
end;
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1 U1 C8 f ^- `2循环语句
9 u+ J1 k& M; {0 C* s" v n9 m (1) from <statement sequence1>
# M( ]8 |! v |: n until <condition> loop
" H) c& p. Y( w3 n) c <statement sequence2>;
/ k5 P( T7 A9 E end;
9 Z/ |8 B" L7 w8 _$ C. _. e (2) while <condition> loop# {! u' Z: L9 o% R( G! ^
<statement sequence1>;
4 U2 W- G6 n2 f _6 o9 f R& p end;
, j$ q. D; p4 B (3) repeat 4 s J! {1 E: O, O2 i. h* e7 T
<statement sequence1>;% G1 H9 C \" n9 h
until <condition>;7 o g! {- a3 V4 P& ?4 M& k6 A
(4) for <condition> to <condition> loop
% d! Q4 p6 r9 L/ h2 q* U1 g <statement sequence1>;& ~2 m! p9 k( ^
next;
# x" o, f& I7 L- d# j. y3中断语句- `4 Z8 b: _5 l; V5 ^4 f0 Z
waituntil <condition> prio <integer expression>;
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以上为常用的函数！. ~% L8 H5 J: \0 g& R( X
还有很多，如有需要我把资料发到你邮箱里 & O7 V, s' o- }& i3 U* M
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