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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
% J6 ^! s5 }' F& f* L* D2 k6 H1 G. s if <condition> then
, s, e% a( v6 v) L5 h( B0 I4 l1 b <statement sequence1>;
, R0 \' |: i" N* J' u+ v) S/ W8 n elseif <condition> then
* W+ O0 |# ^& p8 M; D4 X <statement sequence2>;
3 D$ c* C9 j5 O. i% o' [( W else
) E( \' {; A" m3 `6 s/ H, f <statement sequence3>;) o! W6 D! ~: Q [" N* q8 M2 A
end;
; k6 K; ]! v2 p t/ J如果分支比较多，用：
7 `" U; h5 E: q$ X% h inspect <expression>! M1 h! a& c6 s9 ~; m
when <constant_list> then0 N6 }4 J6 {! F# M
<statement sequence1>;' l/ J( R: `6 j
when <constant_list> then
' I$ N, F7 ~: m# u8 A) ~0 I* W" w1 J <statement sequence2>;: t& W+ I1 B( C% U! A% J4 S. s9 L
...: w; B! z. Y1 a) w$ k
else9 j. [0 E2 P' y) f* A3 t
<statement sequence3>;- m" b8 d5 e: {. v* R* X4 \$ w* j; T
end;
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2循环语句
3 Y; A8 m( x7 \4 m (1) from <statement sequence1>
' d! ]4 s! i6 Q0 P, y" s, K until <condition> loop
- ]' N+ o! D) Y3 J7 U, v/ H) |0 W <statement sequence2>;4 s/ }6 \6 A( S8 l9 A8 g! s
end;3 R, X" e# M6 t, q- p; c
(2) while <condition> loop
5 J+ W, o s& V6 l( }$ p. W1 X <statement sequence1>;" ~. R9 Q, W) Z9 X2 u# m+ z& A
end;
! S+ T# c! @- W8 v( Y- b; c (3) repeat
& I% B: n0 a3 M <statement sequence1>;$ r$ K2 i, Z5 z U
until <condition>;) L+ E* g& b; K, m) |( g
(4) for <condition> to <condition> loop `6 w9 M* p2 A) n1 a
<statement sequence1>;
' ]# w+ y- p9 H% ]- ^ next;
; C% N% V3 ]! X G9 F9 G: k; e& v3中断语句
/ N+ l; s m4 p3 ^ waituntil <condition> prio <integer expression>;7 P& U) G6 c) B# J S
1 B! O* X w# e p# L9 G Q$ c: S# P& @& i. k" ?
以上为常用的函数！
$ }# [# c- R5 ]4 ?* O4 |还有很多，如有需要我把资料发到你邮箱里
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