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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
" _. w( b; u9 J% n if <condition> then8 _2 M; n/ Z( K/ A! n8 y' r7 j, @# E
<statement sequence1>;
# u$ ?2 R o& ~8 G6 g% K elseif <condition> then
+ A8 I0 T6 \9 H <statement sequence2>;9 o% R. _3 f$ [5 x( `
else
% `/ }/ C9 c' ` <statement sequence3>;9 `/ ^ d9 c8 {6 [9 v
end;& x6 b X2 W; @. Q0 \+ s
如果分支比较多,用:
6 M0 p2 A* u2 W$ G9 \ g inspect <expression>( m2 {3 R2 A3 S) |8 t7 G
when <constant_list> then
) d/ c1 `1 C- m t4 b7 | <statement sequence1>;# f3 A' t- S7 L# R1 T, P
when <constant_list> then$ Y/ v7 }' _7 B( T# y# R0 k2 e; i j: c; H
<statement sequence2>;3 f0 q) m4 ]" r! K3 ]7 |
...9 n1 j7 G1 G% X0 ?2 L- E6 P& `
else
; }* f; g% j1 [9 c& U/ O <statement sequence3>;
1 l9 S4 p& n1 B! k8 F1 dend;
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2循环语句
# h# `1 X0 q/ W9 I5 V2 V# v (1) from <statement sequence1>
4 O+ }( S2 R% B. s, |% u3 p$ _ until <condition> loop" p2 K8 O8 u3 G" i/ Q
<statement sequence2>;: \# d& Y% U+ Z' A3 {$ X
end;
. g. c% t, K3 X- w$ z9 h (2) while <condition> loop
6 g/ q; i) i$ u) Y- _6 B3 y! ^! k <statement sequence1>;
! q) _# q3 k4 l5 ~& n3 @ end;
' \- S$ B( ]: C8 K; q2 [% A (3) repeat
6 c- j5 ?8 I% a <statement sequence1>;
# Q4 T) A, T0 N1 V# b2 o0 Y until <condition>;1 H: Z7 }, d3 P1 V/ Q/ i
(4) for <condition> to <condition> loop: o- m1 R) b, P z3 S0 s6 P
<statement sequence1>;! p0 q Q+ q3 ]$ G& I1 W) C
next;
1 V) t; r/ n; B! _' l `7 f7 y, ?3中断语句1 B0 }1 A0 G5 R3 P V$ h( \
waituntil <condition> prio <integer expression>;5 C( v; M0 b0 y2 R0 ~, o# Q
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: i% @8 f( p0 V. V/ z! p& h以上为常用的函数!
+ U6 R/ o# ` }还有很多,如有需要我把资料发到你邮箱里 0 ^! @3 q/ N3 d' S% N" D) q; p
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