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发表于 2012-11-13 08:48:12
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1判断语句, ?$ G# u& B3 h7 U
if <condition> then
' o% b2 q# V+ @ <statement sequence1>;, K& h) S) B9 F. l/ K/ L ~
elseif <condition> then& B0 A4 x, ]5 D# I0 n
<statement sequence2>;
0 b/ P0 o) ]7 M4 a else
# e, c, i% Z) U3 C+ ]2 e0 j <statement sequence3>;
/ }4 H. N8 B& w) N" n end;% I6 a3 j2 r! }/ W- d
如果分支比较多，用：
; K# {9 X( A1 V* r5 W7 N* q8 _ inspect <expression>* x# |' v8 ?$ o: A# w
when <constant_list> then3 ~: \7 J( W: w2 J# ?0 R. w# `
<statement sequence1>;
1 e% D, q& }7 ]0 ^% @ when <constant_list> then( Z3 ?. |1 c6 j8 d+ ~
<statement sequence2>;
) b) v3 }4 O1 n) Q* e! k- K; [, n, p ...
2 q9 J) _. N4 j8 Y0 b% u7 N4 ~8 K else
9 A$ M! D, f3 [5 P <statement sequence3>;6 X5 a+ E: c4 g+ b1 ]
end;
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2循环语句9 @ I& O) l! h" s6 E2 y$ `
(1) from <statement sequence1>; D+ [/ D0 Z( D: u4 i1 S
until <condition> loop
# l3 {% w, U9 V& m4 L <statement sequence2>;! D5 D6 @, q0 B
end;
; @) m: I u; ?: Q, {" k+ V (2) while <condition> loop. ]1 S0 L- i) f
<statement sequence1>;
( \; P+ [$ V' Y3 }2 l7 N, x end;' t" U, q, o1 Y2 j8 f
(3) repeat h8 y3 b: G# {# Y
<statement sequence1>;% A$ L/ i" E: G2 c. Q4 E# Z* M3 Q
until <condition>;, C3 H- l0 T/ H
(4) for <condition> to <condition> loop
8 `! ]; c: M5 h5 f <statement sequence1>;
0 O. T q- r* P6 r9 d next;; E& a: w+ u! F- J- Q& i) v: B- w
3中断语句
% u4 [0 {, [7 f! x& P. ` waituntil <condition> prio <integer expression>;1 r7 K2 C& X% o. Z* f+ q7 O
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以上为常用的函数！
# k$ t: G2 w( D8 _# \+ X; I还有很多，如有需要我把资料发到你邮箱里
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