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发表于 2012-11-13 08:48:12
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1判断语句3 p1 I$ q' a0 O( P
if <condition> then
; N7 i) {( ^9 v: ? <statement sequence1>;
+ A/ h V. q" U% K elseif <condition> then4 |3 D$ a0 }/ S, {0 `8 d
<statement sequence2>;
1 }0 Q4 {0 t7 R7 F( ]3 B else ) D# s' ^! y& w0 f O( Q
<statement sequence3>;
1 O: M' i3 y5 t$ n' d7 d8 p! B end;
, A T. t/ I% J) R8 Z) n如果分支比较多，用：
/ F4 N, A+ w* C: K& h3 R0 i# N inspect <expression>& B$ a5 e4 c f$ j
when <constant_list> then
* J# z* L7 a# B <statement sequence1>;
" y' ^8 Y: s3 q& L* o4 } when <constant_list> then' \0 C1 W& h* A% d
<statement sequence2>;" W o- L7 F: P5 O! Y
...
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<statement sequence3>; G6 W2 J- B& j4 x. w
end;
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5 W2 M; e' h- c' m, ^2循环语句9 [4 X) b8 q% W8 J# z ?& j
(1) from <statement sequence1>
, Q8 A$ G- {: _5 G; N% C4 }, ? until <condition> loop
+ x- k) n% P& F! f <statement sequence2>;: ]0 W1 G5 ` k/ o s- N4 X
end;. o( l8 k9 m9 F% p7 S( E3 n# D/ @
(2) while <condition> loop9 `. N/ V4 s) i0 b, I
<statement sequence1>;
: w. x& x; R' l" h3 e6 [; r- [ end;
( Z7 ^9 B/ U! ]7 w2 N0 \ (3) repeat
8 t4 _: q' H$ q) _0 H! o <statement sequence1>;
! U# B- r! P2 p q. e0 ` ~ until <condition>;
Q; V" ?; q3 ?8 M& w (4) for <condition> to <condition> loop
( B6 r2 W- K1 v# i <statement sequence1>;
5 I. k: ^1 r$ O8 m next;8 B3 w" C1 e# W' W
3中断语句
" t, K: X! N9 s6 l3 P waituntil <condition> prio <integer expression>;
/ z3 ]3 C- G A. V! e$ x8 |8 S0 x' w6 M" e" p, q ~0 k: Z
( s2 H* c8 @4 _: Y+ \! w以上为常用的函数！
4 x- ~1 \ W: H+ O2 g% Q还有很多，如有需要我把资料发到你邮箱里 0 C a$ i, Z$ h
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