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发表于 2012-11-13 08:48:12
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1判断语句
; N) Y. z' [' a0 N if <condition> then
: W2 e% K; h- W q Y# Q! t; s <statement sequence1>;+ X' |4 [/ _5 U5 M1 O3 X0 @9 u
elseif <condition> then
3 g" I# Q) @5 B" P0 B/ q7 @$ ^, E) c <statement sequence2>;7 K- J( ] {& q- Z( d' \' Q y1 q
else R9 f# e) _: i& P
<statement sequence3>;: r3 n( I/ q7 }, N
end;
0 d) }0 D/ o! f如果分支比较多，用：2 K9 u+ _, C+ c) r4 _; _
inspect <expression>4 J0 e6 s. Q+ _ ~, k/ |9 N* h! h. c
when <constant_list> then
4 Z; ^& e$ h" [ <statement sequence1>;
4 z1 c: x ]1 r. r- v when <constant_list> then+ |5 `' C# t3 T7 l9 R+ O. l M+ p, N
<statement sequence2>;
4 b6 J% Z5 ]: ]2 w% f* w ...
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<statement sequence3>;% w- l7 W' C0 l2 `) Y9 |6 W: Y* L
end;2 d* \ S/ Q f+ P7 s
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2循环语句* f3 d( w8 O( I& j6 G
(1) from <statement sequence1>$ _0 V1 c j0 n2 ~0 M* x! E
until <condition> loop( G! ?) P" D) S* z
<statement sequence2>;
6 ^( R6 S! D8 p3 k" }, @ end;
4 n( C+ ~ I& Q (2) while <condition> loop0 A, [: a5 M$ U, }/ q. X
<statement sequence1>;
& m W1 d3 r6 A# C7 P, W end;. S* B5 W7 w2 j% r7 f! M
(3) repeat
3 u4 B0 @6 D$ w& v2 t" ^ Y& v <statement sequence1>;( N6 b, [% S' b7 F4 l- g/ ]+ ?
until <condition>;
~1 ?0 H# g: u% `" @% Y (4) for <condition> to <condition> loop; \. O: _3 F/ Y. H
<statement sequence1>;- B+ f M/ @% B+ \/ m! m
next;' g! }; l; {; [& Q9 D: Y
3中断语句
+ o2 R& A& N7 U% J; t { waituntil <condition> prio <integer expression>; Y; f' V/ R9 t( P# Y D, p3 |1 z2 w0 j
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以上为常用的函数！
8 A# n3 F' W. J3 ]还有很多，如有需要我把资料发到你邮箱里
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