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发表于 2012-11-13 08:48:12
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1判断语句
: k g6 M$ u, r$ z, _; ]. H4 q if <condition> then# v6 g5 i2 s# g/ `5 y: q
<statement sequence1>;% `0 o( S$ C0 V) o, H7 U V
elseif <condition> then
. Z& `% ^& l [$ x! B2 _7 F# [ <statement sequence2>;
0 n5 |* y M' ]/ E5 `& g9 H- m else
9 V) X! d- `3 H' J" N: R <statement sequence3>;( x8 A5 U4 ~ W& R c
end;
9 y1 `+ C+ V2 P/ h2 O如果分支比较多，用：* b8 ~( F* l& W& Y7 M. W
inspect <expression>0 U" l, C- G2 K0 ^! B+ E# y' E
when <constant_list> then' M( @; A! W3 M1 @1 c
<statement sequence1>;& D R# \" o$ d& @1 E0 O
when <constant_list> then
& f: X: @4 w! Y8 K3 }/ N* [9 ~ <statement sequence2>;
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else; }, g- V3 O- f K# j
<statement sequence3>;
# I4 B9 J6 S& q; v. K& f8 Dend;0 D$ n% f- X* T/ S% T
8 ?+ p% P" B; H4 k2 X2 f5 k2循环语句% U+ N) o% {! W$ D1 v2 {; f
(1) from <statement sequence1>
! F: X% X) w* o/ Z# u% Q until <condition> loop
& { x- t, b* W: U& f7 } <statement sequence2>;$ e- P/ W8 C, V
end;) L% K/ }% \" R/ Q! V
(2) while <condition> loop- T) g$ c+ y- u3 |; k8 U! Y
<statement sequence1>;) b( y6 e' g2 _( g4 i
end;
: Z; y5 Z+ j+ | (3) repeat ! H+ P% P( {% Z' G; s& @; i
<statement sequence1>;* J* I' p# \' C/ r* Z2 S
until <condition>;
8 o6 M$ l! K- h x! c2 B8 A& x (4) for <condition> to <condition> loop
5 Y: |3 g+ i- q <statement sequence1>;! a9 j9 c& p2 {& |+ A
next;" f+ b( z2 x5 S/ Z& ]: Z" W7 U
3中断语句# {2 P ^1 [9 R5 p
waituntil <condition> prio <integer expression>;
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6 N/ F a4 ? u! d
以上为常用的函数！
& {+ x- Z" l) |& S, @5 H; f( M& L还有很多，如有需要我把资料发到你邮箱里 & S0 I3 R1 \! ]- l) X
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