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发表于 2012-11-13 08:48:12
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1判断语句. k, f- u- l% o/ q0 d- }. S
if <condition> then8 Y8 q% B! }* @$ ]/ l" T
<statement sequence1>;
6 k( X W9 ]5 p8 E elseif <condition> then
+ R6 j# F f: c( @( l2 a <statement sequence2>;
2 i8 t u, a3 F- w: n* X else : e' d) S+ z' w1 O7 u6 z! B4 D
<statement sequence3>;
0 Y' O/ s# m% P7 p# H2 v6 Q end;
4 R$ Z/ X1 A' ~1 Q& X( p如果分支比较多，用：. C) D. s4 r) L2 ~* P
inspect <expression>3 w2 @. P, E. C9 A/ n
when <constant_list> then% P8 u1 s! E/ p5 W4 }
<statement sequence1>;
' l% l( Y4 E/ ?1 H( f/ | when <constant_list> then9 m% L. Z1 Z @8 Q6 n$ @/ k {/ T
<statement sequence2>;
8 T3 S3 G: n* B7 d3 }. ] ...
$ f: D% p9 D% ]2 P else9 q' b! O) A+ v* B
<statement sequence3>;# ^8 O! b: ?8 L3 d2 W5 J9 a
end;4 P$ H; S& ^9 l) O4 M1 i
+ l; J) p1 v6 Y% n9 v8 m% k" D% i2循环语句
) X6 @6 j( g; ~7 I) V4 v, K (1) from <statement sequence1>* I& M# j! I7 r! P
until <condition> loop9 T; Q, h; I* m, n* M- w0 }
<statement sequence2>;
6 d! V+ x+ }: a7 X! @1 r- [8 g end;
6 r# ^8 S) I' a8 c5 N* B (2) while <condition> loop
3 r1 a. j8 o' o% V6 H <statement sequence1>;2 O/ [1 B+ B1 l. W' }" v% e
end;
/ F3 t x/ P) ]- f6 D/ t; } (3) repeat
" f; G8 H& \1 \ <statement sequence1>;9 i/ e" E& ~5 A. \+ c8 ^6 i8 z# E& _. k
until <condition>;, {4 N- O3 m8 n# o# l+ ]1 Q
(4) for <condition> to <condition> loop
! x0 F2 V) ^. U- _/ B3 S0 a' p <statement sequence1>;
3 S3 |2 U0 s# P2 [; S! @ next;' y% z F9 A/ w8 S+ _7 e
3中断语句
. Q! I( n) p9 g- V waituntil <condition> prio <integer expression>;6 N6 R) ?6 g+ h6 r( Z! k8 B
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以上为常用的函数！
' v2 s i, T' h d还有很多，如有需要我把资料发到你邮箱里 $ q3 K" K7 T) F! ]0 e! e# U2 |
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