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发表于 2012-11-13 08:48:12
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1判断语句. d) n; P: C, N. c6 w7 k' O
if <condition> then
* w$ y% {% f! h: t- U5 L5 A <statement sequence1>;
0 [ l3 p0 ]2 a! F2 \. S elseif <condition> then3 F% [( i" A% t; L1 v& p, b2 M: |
<statement sequence2>;
" W" ?; _5 G$ F. g else
6 O% t: d- } |& b' o, { <statement sequence3>;
# \2 A3 @% b8 C# f, p+ u# t* a0 ] end;
0 O6 T) q; S# ~/ G4 U% b4 V4 v ~# K: Y如果分支比较多，用：
: b$ M% I c# |. |7 C( O inspect <expression>1 A6 H5 T7 f# I9 V$ |+ k
when <constant_list> then) L% O/ T+ a# {/ X
<statement sequence1>;
2 U& w: I7 P# G8 y& L when <constant_list> then* {2 o1 C1 \. z. h2 R% g4 o
<statement sequence2>;" ]& J L% h& V% D8 Z2 X
...
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<statement sequence3>;
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2循环语句
+ C9 S6 n% @9 ]( s$ j- k' D (1) from <statement sequence1>
# p( F6 i: d' D) N) Q1 | until <condition> loop8 D0 |' h: ~" r7 i2 j
<statement sequence2>;& n o' F8 W/ \6 H$ V5 | R: Q
end;
5 [4 p) d+ {% W2 y (2) while <condition> loop
1 K- w% H( k9 X% y/ p8 w" \* }7 R <statement sequence1>;
- d, |/ ?. T; [8 T0 w. J5 h end;9 u( ~: F! e2 M; W- J7 t
(3) repeat
2 _( W4 i# t! _8 S* J# ] <statement sequence1>;( C# u* H3 w7 Z4 N/ l
until <condition>;
: q& H) ?5 i# n% S# g0 N (4) for <condition> to <condition> loop
L. |/ E* m6 J- b. a% p- N7 Z <statement sequence1>;8 d- ^$ n3 L( E3 H& R' `
next;; C. F$ S# H9 K, R- M$ r) ?* T
3中断语句
( m: j t5 _' y& Q- f waituntil <condition> prio <integer expression>;
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以上为常用的函数！
3 p( ~4 {$ D9 C- h0 @* w9 I还有很多，如有需要我把资料发到你邮箱里 5 [$ N! E6 W* d! i P3 C4 n) j; e
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