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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
$ V0 Z6 {$ p9 s# {" v if <condition> then" m. o0 R' n* R9 b
<statement sequence1>;
5 W1 _% K! W" r# s5 y* [ elseif <condition> then
* t/ u3 [# x! _4 ? ~( {" \ <statement sequence2>;1 D3 ]3 V1 j& h- ]: @7 U8 \$ W
else ; P6 V8 ^9 e. Q, t2 J5 o' A: n7 M2 E
<statement sequence3>;: F+ @$ f% a) L8 _' ~
end;
% n' s1 D5 f! l; K: b如果分支比较多，用：
! F* m4 m; t6 X7 c* \- ? inspect <expression>
+ G2 X- B5 t$ I5 M6 k( g n when <constant_list> then2 ^; y7 V1 F: F$ B7 X; G
<statement sequence1>;
' }9 m" U3 r' z, g1 s when <constant_list> then t' n- p) Q/ |/ t I* {( G1 E
<statement sequence2>;
; p, M0 t4 `9 p- Y ...
6 O- f4 ]) R, { else% f! B$ R/ x9 x- L9 l; |/ G+ N
<statement sequence3>;9 X3 x" }# m2 B! H' d) b
end;
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2循环语句
G5 r) i4 b8 q: {# M$ r( S0 W7 Y (1) from <statement sequence1>! T" n& v4 q- ]* p1 g! {, u+ Q
until <condition> loop2 |5 u* i$ A0 o! T% R$ S. J3 R( H
<statement sequence2>;3 s* X$ a+ r% {5 D( ^# c. T5 s5 E
end; z# X: i% k! w2 h. E$ i8 E) y3 O' U
(2) while <condition> loop
+ E9 t& k* ], W9 s <statement sequence1>;
% b- A( F$ _& L9 p. _ end;
8 _- h$ w" ]/ m# f) U4 _1 Z( U& o (3) repeat / V) K, G7 ?; J: ]( I* q+ Q
<statement sequence1>;
9 U/ y! p% O3 }7 R. o4 S1 b until <condition>;2 @8 u* ^) Y( H
(4) for <condition> to <condition> loop3 u" _% d: o' K5 g" Q' g( x- ^
<statement sequence1>;7 o/ _0 F6 j/ k) B5 l& H: g
next;
, e) B( H$ Q G5 n3中断语句
2 x3 ~* y8 S& b waituntil <condition> prio <integer expression>;3 w: n4 K5 ~/ y6 H& x
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以上为常用的函数！
% }3 t8 O6 \8 @$ ?/ M* c& }还有很多，如有需要我把资料发到你邮箱里
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