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发表于 2012-11-13 08:48:12
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1判断语句4 a7 o' v% @/ D
if <condition> then' z7 h, B, i" U% Q
<statement sequence1>;5 a3 U' C2 G3 h. ^! g% [6 P y6 c; r
elseif <condition> then
$ {% |% N M+ H6 g <statement sequence2>;" l) P% l; k: A. F* `% R3 ~; N
else
0 m9 M& E0 Q' A j <statement sequence3>;* }$ n9 s( T: ^1 \/ f- N5 p
end;( z8 f; _4 H2 d
如果分支比较多，用：
& }) I, B1 N0 X9 ~ inspect <expression>
. A1 i" n0 i- t2 k( `$ a when <constant_list> then6 c3 m# F- J# s- v; X. E& T
<statement sequence1>;
6 j9 |9 n+ ?* M, d. M when <constant_list> then+ B4 e/ \- V" H5 r8 [5 E! I6 p
<statement sequence2>;7 ?( j5 U, u+ B8 c) r' c* f; g# l* p
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else N3 Y j& G3 A! R- q( I
<statement sequence3>;
! W% R. f0 O' T, l' D+ p9 Aend;: e, `' C5 ]$ {9 n
* V) q( P; Y" i5 D" ~8 Q2循环语句3 [8 A( E% R' w, M+ r ?2 `: v5 U
(1) from <statement sequence1>$ Q5 f8 k6 R \3 k
until <condition> loop, N8 \* W# Z8 b
<statement sequence2>;
( b- ~2 l8 M$ Y7 i end;
1 G' _# j1 Q" B (2) while <condition> loop9 O7 z! G5 @0 ?: ?8 ?$ o
<statement sequence1>;
4 l' H# e$ | y, j) o7 w* \ end;
) n1 @' \0 U9 y3 W+ y4 F- I, V (3) repeat 3 z @; v0 H6 G# B
<statement sequence1>;4 j7 J; [; Y* P% t5 b$ J1 n$ o& G, j& G
until <condition>;
: S2 S+ J; P4 r% M (4) for <condition> to <condition> loop
& e( Y% O) [, @9 v( W3 o8 ~% V9 ~3 Y <statement sequence1>;
. h3 F# O& X7 A8 A: u next;3 x" e, \' [" s$ r
3中断语句/ s3 q$ t; b5 o! q5 y1 c
waituntil <condition> prio <integer expression>;* @# v# C& L7 f0 B; ?
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以上为常用的函数！: r: S" z. m9 |* M
还有很多，如有需要我把资料发到你邮箱里
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