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发表于 2012-11-13 08:48:12
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1判断语句4 n- [2 P8 J1 X Z# P |
if <condition> then
! v) M: i; Y, A- n( }8 ] <statement sequence1>;
9 z) s- D0 N$ P' Z; I+ u W7 E. b elseif <condition> then. \/ c, u# X0 n& |- T5 b
<statement sequence2>;* V: x) e' ~/ T0 W
else 8 D6 _# ~+ e! I+ E* [, t3 U
<statement sequence3>;1 n7 c9 m. s8 F% @3 f9 I* W \$ j& Z
end;5 f: p7 R$ r: q/ w6 o: Q
如果分支比较多，用：2 ^% f' d9 D R# `+ O# e
inspect <expression>! i. P3 T) @3 |# \/ U' B
when <constant_list> then( y6 x6 p; Y, Q, f x
<statement sequence1>;
2 M: A$ i3 H2 f! w/ \" g+ b- D when <constant_list> then' {& j7 _9 m& p
<statement sequence2>;
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else
! \/ g" r& ^5 y: {1 T <statement sequence3>;
( {9 J+ K$ r; r- G) {/ iend;
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0 w( I# x2 V% h; E2循环语句
0 Y1 n2 a2 @( x7 v) y8 l R (1) from <statement sequence1>
6 g+ V' T) b) m7 B v1 | until <condition> loop
- W7 l" T9 l1 |. `4 { <statement sequence2>;- |7 |4 x B( O0 U5 d
end;
! }. O, T9 c' g7 m (2) while <condition> loop
3 O6 t7 c. w) V9 n6 j <statement sequence1>;5 e$ l; q% \* \! y7 i# {
end;1 }1 F: L5 L: }
(3) repeat
, ]( S; P/ M5 c% V) D& v' x2 Y <statement sequence1>;
- F% ~, b+ x) r { until <condition>;
/ f9 ]7 R9 Q9 H (4) for <condition> to <condition> loop
2 x+ Z6 C* k! [9 q) M6 ^ <statement sequence1>;
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3中断语句/ z7 O; W' {2 Y- D) R! k9 I
waituntil <condition> prio <integer expression>;+ }3 Q9 ]/ A. G' a1 C
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9 a- }/ m/ \; q0 `- a以上为常用的函数！" G% q5 R/ h# Q, u: k5 ^, e9 c
还有很多，如有需要我把资料发到你邮箱里 : l2 ~. n' ~. s1 v% O9 [
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