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发表于 2012-11-13 08:48:12
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1判断语句: C, p) i" |" V J6 G+ e" J
if <condition> then
* w/ p: `7 H3 O K, v' x; L <statement sequence1>;7 L) i" n. e9 [4 p& j6 g
elseif <condition> then
& C( n8 G5 k0 I: u, T$ ?9 M, n. [ <statement sequence2>;& H+ X @3 c( o9 `# }9 O& i9 J7 z
else
$ l- c' T& I. [2 _ <statement sequence3>;
) a/ `( b, N. l h- K end;$ U" P9 n* y k2 f1 D& }
如果分支比较多，用：
5 h Z/ m7 m- x5 k) F inspect <expression> Q/ X& k/ P3 U! X L* d8 U
when <constant_list> then+ Y4 P3 w2 H: K# j
<statement sequence1>;
4 B; W; H' t! D O/ c5 m# o when <constant_list> then+ W( w- _. T: R+ d- E E" M1 R# j
<statement sequence2>;! }% u& y: f5 E
..., ~' B% }" f6 Z
else
) l( S; n" e, r" ]- V+ ~ <statement sequence3>;+ r& Z' a" }0 Z
end;6 _! L/ p9 x# X- j
/ W: z6 e5 W* i- ^, |2循环语句5 D1 \8 ^5 I( ?
(1) from <statement sequence1>
0 i/ Z$ E5 U+ { until <condition> loop1 y- z- G2 ]; C5 W" C+ H
<statement sequence2>;% Y3 S" z+ J* Y
end;# R+ c7 G; F( C4 i8 w
(2) while <condition> loop
2 [: V2 R, x' S8 E. |- Q <statement sequence1>;
, M) t+ d+ Q0 `% j) F5 w; ? end;
, y w# t4 c$ K4 \4 D. [9 _ (3) repeat
o2 f7 q1 {. ]" }0 ^ <statement sequence1>;$ Q. g; G' {! l. `, H8 J2 {% p
until <condition>;4 D6 E/ _7 w( q) b) c' Z! O2 a
(4) for <condition> to <condition> loop/ C! N& I% i. a7 y
<statement sequence1>;0 W, }/ }& \* n' B" V! R3 F
next;/ E* G7 c& Q+ d' X! |
3中断语句
g: H/ ]& F1 h, ~ waituntil <condition> prio <integer expression>;% X; w8 |9 P( B' y2 L
7 P6 {, H# ~& n' ^0 a/ \* A1 f1 k' T
以上为常用的函数！
- F8 B$ z8 L+ t* b1 V* v还有很多，如有需要我把资料发到你邮箱里
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