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发表于 2012-11-13 08:48:12
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1判断语句- ?$ D$ Q4 H! v7 S9 P) z& F# ^
if <condition> then8 }' E6 J( D0 h' @7 d+ K/ q
<statement sequence1>;
) J/ U$ O5 Y3 G6 e4 ?" g2 c$ n elseif <condition> then! Y; T6 K5 [4 r$ Z A+ O
<statement sequence2>;0 {& [& u: }) w& V
else % F/ O* k. B: }+ G2 L5 M8 q7 d
<statement sequence3>;! [/ |2 @* q% B8 D5 Y; h
end;9 E- ^+ D( e& `8 W
如果分支比较多，用：
) C& y" L5 L4 I6 ` inspect <expression>3 V6 j: x* y9 c; _& I% G
when <constant_list> then
' Y; d. K8 M7 Q; M <statement sequence1>;
: \6 b- K% X2 T, e- n) q# | when <constant_list> then2 I. j D5 p3 Y) q- o* {0 c1 t
<statement sequence2>; G7 [' e# I+ K% g
...# i n& [. I& r
else
* s& G- M* z. _ <statement sequence3>;) r: ]) g5 F# ~% |- E- [# T
end;
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2循环语句
* i7 o' f2 c% n0 n% Y (1) from <statement sequence1>
% q0 \9 k; _: v0 o4 V3 a d% x6 E until <condition> loop
; E% r% B1 H' k! V/ I <statement sequence2>;8 I$ D% f1 f/ X. Y/ G; b
end;) D! N% m, ]3 y) m$ v s8 L
(2) while <condition> loop9 x8 P2 ~( _) {
<statement sequence1>;/ D3 M5 R5 [' r! s' X+ i" u. l
end;
- x+ Q2 H5 b8 P9 _% G* k, a9 T& Y* H: f (3) repeat
, u2 k# ?8 N# @' R& [+ ` <statement sequence1>;
) b) x) \6 p9 b* g+ h until <condition>;) Q0 C/ \2 J4 |6 e/ O2 v1 }1 L7 e& l
(4) for <condition> to <condition> loop$ ?5 q: @+ N- K" ]7 { z
<statement sequence1>;
`( X5 q) s4 J next;9 C7 @! @5 l* v+ ~" c3 }
3中断语句
o- G. u2 g* M. f waituntil <condition> prio <integer expression>;! Z- W: q& {# w, V0 C7 A( o# l; T G
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以上为常用的函数！, }" G" i; i0 c! q
还有很多，如有需要我把资料发到你邮箱里 : p) I7 z% V ^& y7 X( B/ f
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