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发表于 2012-11-13 08:48:12
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1判断语句2 F* I0 V$ d$ N! c! {: g) R
if <condition> then
1 j7 D6 S% `* g2 k, ` U' X+ A <statement sequence1>;$ J$ }. F! E# B1 Q/ P
elseif <condition> then2 X3 ~. G" E4 F( T& Y
<statement sequence2>;6 ^) x+ g/ u8 I" X7 ?
else
Q0 _$ {5 t3 e2 T9 L& u2 w n <statement sequence3>;
$ f8 c x4 E$ n1 N8 _/ ~+ ?4 j Q end;
1 e! p9 L. b6 V如果分支比较多，用：4 [% U0 a* y9 F$ g0 ^3 k; u" |
inspect <expression>
5 a1 h! f- N" ~; Y when <constant_list> then) F1 z+ _, q1 \+ `
<statement sequence1>;
/ {7 l* z4 V: Z v when <constant_list> then
/ x' H7 {' J* @) z <statement sequence2>;
! i% l* I& o* x, }& B ...
1 f/ o' }" U2 S4 k# a x0 \: [/ p6 {! z else
- N: B8 H& _1 B2 t9 ` <statement sequence3>;* W6 J& m, v5 ?, m4 J* ^" G+ ~
end;
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2循环语句# X- `$ v \* q1 G# F! t0 P z/ L
(1) from <statement sequence1>: v6 N5 ]5 E* K/ V8 B- _
until <condition> loop
$ z$ @8 I9 _& [2 `7 [! F, M, N <statement sequence2>;
3 l3 c& f' R$ ~+ }3 x end;8 r5 j4 B) Q7 l: y# }9 ?
(2) while <condition> loop
2 M4 e$ [" c) d4 i3 E <statement sequence1>;+ {' h- @7 T, x' u
end;7 M$ _& ? f' E( ^% w1 [- e6 R. i
(3) repeat $ g: D9 d" a; M: I
<statement sequence1>;
' `8 f) E4 D$ ~% b until <condition>;
C& I( v' @2 _ (4) for <condition> to <condition> loop
9 q) ^. L3 l3 q% B3 Y, d <statement sequence1>;
. ? X8 Z8 M9 R* d, f" O next;' ~% h5 J- {& M* w. ~2 N1 i9 S
3中断语句. z/ B# F$ q" P6 |8 V
waituntil <condition> prio <integer expression>;
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6 i% D' w* ^) S: s6 y7 M以上为常用的函数！
' G1 C7 k0 f, T0 `9 ?5 q- }2 m$ ~还有很多，如有需要我把资料发到你邮箱里
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