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发表于 2012-11-13 08:48:12
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1判断语句
4 Y3 u; H( z: {; Q if <condition> then
" X/ ]2 d+ O* e <statement sequence1>;5 Q9 ~& E! l z+ J5 C, B, c
elseif <condition> then% b/ p, `# z f- r$ H
<statement sequence2>;
* y6 Z6 W2 E0 Y0 l$ X% ^& b else
# d: A, R, Y8 C' e( a- n$ d2 O6 r <statement sequence3>;
4 X- ^* c# c8 D- d5 E end;
7 \ j7 L: a( N' q z' @( j$ R h如果分支比较多，用：4 }. H) M+ X% c) B# f8 {# r
inspect <expression>
* [. l1 G* N. v5 a7 R$ E1 M, b8 p when <constant_list> then; r0 t& X: U8 h, d1 C X! a. M
<statement sequence1>;, @9 K$ T6 n/ ?7 v" Q: U
when <constant_list> then# @( N E4 a$ v& h# x) O0 L
<statement sequence2>;% i6 z" [; g3 t. k. p) R7 h: f5 u3 l
...
9 ^! `. d3 b$ r" h else
; u% \5 N; h7 w j" l- \* ~ <statement sequence3>;
' G1 r) n0 y0 P$ Jend;
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2循环语句% L& F0 r. {3 r/ ]
(1) from <statement sequence1>
5 S( n1 P( v/ u F: q1 r until <condition> loop
{# K& i, X* Q <statement sequence2>;3 b: H# D! [: l9 {( i0 {6 k
end;( g( H& B6 s8 Q P) g- w( o _% x
(2) while <condition> loop( O, |5 y' I1 M& G- g) Y {0 G0 L
<statement sequence1>;
* A+ P6 S$ T/ c; Y E$ C end;, U) b9 N1 {- b; {4 B2 H
(3) repeat 5 L7 e- h" \0 Y8 `* u
<statement sequence1>;
+ L2 E( X$ X Q6 F until <condition>;
% q+ z; f! @5 z% p! B (4) for <condition> to <condition> loop: ^6 m6 |, c# J# Y. v
<statement sequence1>;% \, m' n) ~% t0 x5 A9 ~% \
next;
! V" E8 [0 u% |1 R3 C! C) {/ ]3中断语句
& J! J# d3 a& r5 j waituntil <condition> prio <integer expression>;
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, o# C8 K- W8 D* _+ x& w3 K( g以上为常用的函数！
9 p- N) l' G- D! T9 \% }$ d还有很多，如有需要我把资料发到你邮箱里 + L7 }1 N3 H0 E: `+ r! G
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