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发表于 2012-11-13 08:48:12
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1判断语句
8 k% S% d+ e0 d# {% _' }& M if <condition> then9 i+ {/ v+ w: F
<statement sequence1>;, V. ?# m' w3 p) |( A x& i& ^( g- |
elseif <condition> then
- {" @" s+ b+ {: h w <statement sequence2>;9 q. F" g P Q. ]
else
# E$ Y, D- F9 i; G5 H% ]- k <statement sequence3>;4 s5 Y# ] [% L- s% i) T$ P' w
end;
/ w e+ G/ {1 r A- F2 D0 N: g% W如果分支比较多,用:) E4 ?6 w& k" r' D
inspect <expression>
" ?& _0 H- s+ P0 p0 ` when <constant_list> then& @- T6 s0 _0 J+ z7 U
<statement sequence1>;( M& u5 H2 @4 a2 b/ w. l3 f3 M
when <constant_list> then
; x) v8 |, U( ]* T3 x- k4 c+ V <statement sequence2>;
, `7 P$ C( I) I6 _9 P t ...# M8 J$ b0 I0 j, m- ~
else
/ P. c7 p* X# Z/ M1 W <statement sequence3>;
8 |7 T) n2 T* J5 x3 N# c& T5 xend;8 }& W- y4 g/ Y! @
: ?! g5 Z+ p- s7 o# u; o2循环语句
9 j- e1 Z: s# Z& \. ~ (1) from <statement sequence1>
" G$ l7 h; X7 f& K until <condition> loop
$ r5 v/ S' L! _. h0 i) y, f0 a <statement sequence2>;
& h: o {1 i& _2 ]2 P& l end;. `( C$ \ M# C4 n: {- d/ s& Y* j
(2) while <condition> loop3 r' v2 [, x: p
<statement sequence1>;& c/ ?- J1 P3 z" B& Y
end;. l; Z! Y) n* A, O
(3) repeat
k/ c& _# O3 d. ]- k* ]5 Z. t3 A <statement sequence1>;) a2 `% ^7 k" U/ @$ e! ^7 r
until <condition>;
# W8 G/ R1 f% n9 l (4) for <condition> to <condition> loop
: q" K0 N I! ^4 `& [" T <statement sequence1>;0 _& k# S8 A8 L$ \) |4 Q$ A' w
next;1 p/ S: v. C# L, q7 \
3中断语句 A. @: r2 ?( q. Q! O1 G7 D
waituntil <condition> prio <integer expression>;! \# b+ ~( x# ?+ W! n4 Q5 t
/ O2 w7 M# j( @. Q6 H& }
& ]- F7 ^# A( d9 q$ K以上为常用的函数!9 @0 ~# ?8 Q+ J5 j# g$ e
还有很多,如有需要我把资料发到你邮箱里 # x4 i: O4 `4 R9 v* P
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