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发表于 2012-11-13 08:48:12
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1判断语句5 b! ~; u' X7 k% d8 |. f
if <condition> then* {, y7 \) ` M' @
<statement sequence1>;
6 R: U% n3 l4 a$ s elseif <condition> then
- m @- r+ u5 k: b* w <statement sequence2>;4 M G3 ^! D* e4 z
else
6 ]) `2 g; g% X" r8 H <statement sequence3>;6 m+ W) `5 c5 G, ]
end;
2 K2 r5 u# F# A) Q1 Z如果分支比较多，用：
( X# z' d: v b1 ^ inspect <expression>+ t6 T0 ^4 D5 B. }7 u* m
when <constant_list> then3 E* [$ F) c/ l6 S" t8 {3 p* a
<statement sequence1>;
5 W1 z4 Z8 h$ s0 g* D% p when <constant_list> then4 K, _; g% S8 l* L5 C/ C
<statement sequence2>;# j7 {5 x9 Y2 r( ^8 g" p
...
) @7 B+ r/ h0 g% O- ] else! z q; _# S: l5 I+ S1 L4 g
<statement sequence3>;
; u {0 f- e' k+ Qend;
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/ m# ~+ E/ O9 j1 j2循环语句0 }0 r: ]( }+ C1 A- Y0 B6 c9 X8 O: m
(1) from <statement sequence1>
0 I& M; K9 u/ e5 x' L until <condition> loop
9 W( c# p$ ]5 {! P) e <statement sequence2>;; q d6 z* u6 {, ^! e
end;& N# H! \0 i0 i% f! t! E
(2) while <condition> loop; c9 Q, k: h, u8 v+ V( j# a' X
<statement sequence1>;+ i, A- b7 n" G; Q1 Y$ ]- o
end;/ z- z6 a7 `2 Z6 h! p( p; t' B
(3) repeat & w6 R0 Y4 Y% @
<statement sequence1>;4 Y7 V; e8 n) Z0 ]: S' b+ v4 w' K
until <condition>;1 e u. t. b0 U- y% m' L2 @5 g
(4) for <condition> to <condition> loop
" P9 r) }# ^: J. g9 \ <statement sequence1>;
- W3 q& \# l# n% g1 A7 p next;7 H0 U1 \2 |6 D+ e0 r6 [6 ^- |- e
3中断语句
0 Q8 T7 f f7 {' A! P waituntil <condition> prio <integer expression>;; y0 W9 X! q* Y
7 f* }* D, i3 d0 ^
7 |5 B/ H) P: ~% r! l* \以上为常用的函数！: f/ P8 k5 a' A" u% T" H
还有很多，如有需要我把资料发到你邮箱里 5 j- p3 v) }) F9 v4 |& w
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