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发表于 2012-11-13 08:48:12
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1判断语句 x9 m) b; j% e
if <condition> then
/ H8 H9 U; z4 q9 m- ]5 e2 }2 w <statement sequence1>;
+ p* u3 i `0 g6 ?% F elseif <condition> then+ d1 V4 ?+ j4 }
<statement sequence2>;" w G6 K( N' k- l1 Q' T
else ! \ t8 L0 i9 p$ X7 s8 x
<statement sequence3>;
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如果分支比较多，用：
( X; C' q0 H; o8 D inspect <expression>( e( m% ~1 W3 N2 x
when <constant_list> then" ^9 z; B' ] r3 H& |
<statement sequence1>;
h) e3 i' y0 e$ n. d0 Z) V# _ when <constant_list> then
2 D6 N. r0 T: X2 _- c <statement sequence2>;
5 p) @% U/ ^% v% y/ O% A ...
l7 q+ f' N8 I* i else
: E( U. J8 ?* g- t2 W <statement sequence3>;& y- O# {% M* n* l/ [/ y
end;
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# K3 K0 x0 d7 q2循环语句
% F: {1 \. O& u! o) X (1) from <statement sequence1>) c, T* e* }- A0 r9 s$ E% N1 w) A
until <condition> loop
0 A" e3 Y3 q- h) h <statement sequence2>;2 I; l7 V f: l% b Z
end;
& h1 d. H$ b8 ~# N (2) while <condition> loop0 f, `( e v% N; U
<statement sequence1>;
# m$ {+ d x$ n# J end;
2 n" B( ~) s' V (3) repeat 1 p& w+ v4 P8 T# H% a
<statement sequence1>;" [+ l( c. g0 p
until <condition>; g G6 }2 j. T4 O7 d& S8 b
(4) for <condition> to <condition> loop
/ W8 }% e% j% p; L0 K4 h/ ] <statement sequence1>;; D5 G2 J; E! Z, i( t
next;
4 y& W3 A: E) N% m# ]3中断语句
0 Y+ y2 N$ U5 D% Y4 N' S; _ waituntil <condition> prio <integer expression>;
! {0 ~4 u+ N& d' x8 g& p
L0 ~5 s3 i$ Q& ?" c% D& F. s' x" ]" ]" w7 R% D* r3 J
以上为常用的函数！
6 Z( D, Y( a0 z还有很多，如有需要我把资料发到你邮箱里 8 T' Q2 D4 e* F+ B! }7 t& Z
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