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发表于 2012-11-13 08:48:12
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1判断语句0 j6 \) f4 L5 A; b( K; g
if <condition> then5 C! ^4 z) T2 _
<statement sequence1>;
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<statement sequence2>; X( w+ j9 x& A( V; o: W
else
+ c7 S5 x0 y( k <statement sequence3>;
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如果分支比较多，用：, x; _! H' H7 l% S8 d- @
inspect <expression> j7 L8 ^+ R$ k- o
when <constant_list> then; ]- F: h. B& o5 ^3 C
<statement sequence1>;
8 T: X0 w/ m6 ?& T when <constant_list> then
( P2 p% [+ l3 _ \& o3 V <statement sequence2>;# ?- g" {& ?: ?; b' _
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else
/ T: U3 j3 f1 ?3 ~, x' U5 u4 x <statement sequence3>;0 A+ t- `# A, s' q2 j
end;$ s1 C$ @2 P6 O E5 I& I
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2循环语句
$ N/ I( a( H% w7 u, l: B (1) from <statement sequence1>- D" [3 T4 d1 u: \- p. L
until <condition> loop
0 x" l2 b H0 C <statement sequence2>;: u9 |1 l1 h# S2 C9 {
end;& k" T x4 F! A/ p* h6 }
(2) while <condition> loop% |: @4 q* ^, t5 T$ ]. e2 L
<statement sequence1>;
, H$ W$ F7 `* i6 ]8 M1 h end;
" ?% h+ e1 m1 m# C- X (3) repeat . W* w' N) F, X- l M
<statement sequence1>;4 R; u; Y) Z8 a4 l, ~8 w/ p# [
until <condition>;
p/ h$ ?+ @% \ ^& j `5 s (4) for <condition> to <condition> loop# ~ o$ Z* J7 i: M) g
<statement sequence1>;5 I8 X2 }2 b' w7 i* g
next;+ p G7 V9 F. K. A9 J
3中断语句
4 n+ q, V4 Z3 D waituntil <condition> prio <integer expression>;
) X8 v& L( ^( a' s! P5 k) I" z7 R' y: d
6 \+ P8 M! Z$ S# `: j$ H; x以上为常用的函数！
( T) B! n% N" h7 G0 _7 N9 d2 B$ I还有很多，如有需要我把资料发到你邮箱里
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