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发表于 2012-11-13 08:48:12
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1判断语句
* h/ r0 w+ A% B9 p if <condition> then
4 U/ i% k! C3 T9 P( h <statement sequence1>;; k$ S2 f: Y* a! e( v+ s- l
elseif <condition> then/ L" `! ?3 c/ I: e( U" u$ F m1 W
<statement sequence2>;
4 a) _8 Z/ f! r- P else 6 H. |8 P9 X/ O% Q0 ^" M3 [; H9 c
<statement sequence3>;
- `$ l! G$ {$ O' l U: k2 N end;
- m0 v7 j: W _; |, z; e- O如果分支比较多，用：
& ]$ P6 ]# T/ | inspect <expression>8 s0 m! }9 l6 x' m: J
when <constant_list> then) n3 z1 l1 V3 D; N E( z2 F7 c
<statement sequence1>;
% j( V! R' \. n# ~. x! m when <constant_list> then) `" M! x) X! I
<statement sequence2>;4 J4 e! H& r8 c5 i. H! O" q J
...7 Z! x- a9 d& c4 ^( t: h" z* s) s. ~
else- A U& k' }5 B$ t8 t
<statement sequence3>;, N6 z2 B/ ^3 D- B6 ^4 g8 u8 Z
end;
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/ D1 t7 B" D/ Z$ @1 v2循环语句
- Q5 s' ?/ f3 r+ v8 {! t (1) from <statement sequence1>
( e5 M' F! r7 b& P, W" f- M until <condition> loop
) Y5 Q6 L& R) y2 g* t. z2 z1 S2 f' D <statement sequence2>;
3 w0 L% z3 v+ ^* F" i9 C ~ end;
7 r- b8 k6 l" L- R; M4 k: P$ i! {: I (2) while <condition> loop
& n# }2 a2 K8 K1 s" m: ^ <statement sequence1>;
5 H" L/ Q: ~) {7 S$ Y end;
3 r6 g# W/ Z. k2 T% `& s: J7 Z' W (3) repeat 6 Y, Z+ ^) l9 B% K; R/ Q) w
<statement sequence1>;. H. Q) W& A+ s( q
until <condition>;
7 Z! s& o/ o( z. G* x( X4 l (4) for <condition> to <condition> loop; l& g- j9 O& @: Y9 j
<statement sequence1>;4 @. n, a& G0 `9 B( _& b J
next;/ A5 S5 U0 Z5 H/ g$ t+ }5 |% S
3中断语句! E1 O% p9 g% w& j" G; ?/ d
waituntil <condition> prio <integer expression>;0 q# s& u4 A# f0 y5 |/ M6 D. t
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1 Z0 z6 z5 R G0 G0 j7 [ ?
以上为常用的函数！
& o' G2 F" S% N% X3 d还有很多，如有需要我把资料发到你邮箱里 " |' H: g) Y: J7 T) U) s: v2 ?
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