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发表于 2012-11-13 08:48:12
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1判断语句
2 W' U' J" D/ B if <condition> then
5 B: w4 l# k. ^4 m <statement sequence1>;
$ S4 ^4 u& O4 T8 _. r* o, k0 j elseif <condition> then- _0 r3 o, _7 E) I
<statement sequence2>;
) o4 ~/ h2 c8 s; l else / i1 y8 e5 ]; F; Y+ {5 z" I0 X
<statement sequence3>;9 f# c7 Q1 d0 D4 x7 a
end;
! H. } W# B2 {0 v" }" ]% @如果分支比较多，用：/ X# J( ^4 Z) v. ^7 m( D% \
inspect <expression>. @' q, [: o$ x$ j: V4 P/ `
when <constant_list> then
7 U1 \1 p2 v/ O) I3 X <statement sequence1>;
$ x0 O" w9 {1 v8 G2 S8 c when <constant_list> then2 G( S/ X1 T- d! m1 {: e' `1 ?! p9 C2 B% t
<statement sequence2>;
! V1 ?8 Q5 e3 L ...
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<statement sequence3>;3 Q6 g8 T0 ~3 H9 K# a A, H
end;+ y4 i/ q) X, A4 A" _
: t5 V9 [7 Y* G2循环语句, ?/ {( z7 {5 H! a+ _7 \; d: J
(1) from <statement sequence1>+ ` j+ U! ` g' X
until <condition> loop* i1 H6 N$ r* L+ R) ^. B
<statement sequence2>;
6 G" J" n. C2 z* H) J end;
{3 h% ^6 i% C0 L6 [ (2) while <condition> loop
5 v* P0 T+ E* f0 B$ D0 o" f; V# f5 X. N <statement sequence1>;
: q8 M& x7 T, r; i; n, ] E3 G end;
8 Y8 ]9 }# Z! T# y5 H1 T; a! Y (3) repeat 3 B$ z. u: Q: `* x; k& S
<statement sequence1>;: Z1 [: W6 z" B" z) V t7 b$ s
until <condition>;
: e4 j7 ^, `8 v: w% {( f (4) for <condition> to <condition> loop
1 w9 r/ |. V* X. a( ]+ j& Y <statement sequence1>;$ I. M1 ~& V! q. H0 `( E
next;
+ w# z: v/ s O- p2 b7 d3中断语句
" D2 ?5 I* Q! H6 d# n D7 H waituntil <condition> prio <integer expression>;
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* ~/ ]( y$ T# m, I; K* I. q以上为常用的函数！
6 L" T( Q! h p+ z6 P还有很多，如有需要我把资料发到你邮箱里 4 q# J" A* Z' N9 y6 F+ I; b
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