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发表于 2012-11-13 08:48:12
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1判断语句
! S0 i g* {; n( W5 i9 c+ X& D if <condition> then* D( V6 |0 y! u1 n
<statement sequence1>;6 z3 \3 |7 ^( v3 a6 I! D
elseif <condition> then
% P# D0 M1 e) G0 @; f# X2 _+ ?$ m& ^ <statement sequence2>;! e* u" K* J& Z3 N' B% I
else * ?5 D5 S: D% m5 l
<statement sequence3>;, P$ S! H: }+ v& o C
end;
& [* q6 g) J! ^如果分支比较多，用：3 B' W1 C) t% ]# U2 v/ r, r6 v
inspect <expression>% y! A1 R8 r. H% S) o; F! x
when <constant_list> then
* e9 e0 J6 Q8 \# b <statement sequence1>;, L9 `0 h9 t* s7 d7 w$ V0 Y
when <constant_list> then
+ S+ S5 F+ G% I <statement sequence2>;
" ]3 c9 R6 ~. g# j' v0 V ...
! g* z, [- ]0 M5 _0 l2 i. B- ]# { else
/ b- E0 J9 w- S. }! i% E <statement sequence3>;& }2 Q9 X( R6 [ u3 i( t4 r% x9 |
end;
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$ @3 A, y( n- |) l2循环语句) F* U. K" i. ~: U4 ^
(1) from <statement sequence1>! b/ d' J. M) D% G
until <condition> loop; O" k5 A3 j5 M! M8 d" G y
<statement sequence2>;$ q" [ p5 K4 W% g" @* G3 h
end;0 c4 B% N5 x1 q8 }9 b# K! }
(2) while <condition> loop2 T3 H' V6 @6 {# D, z/ f
<statement sequence1>;" ~2 r9 {9 k0 Q1 Z
end;; c& C' v' o6 c/ D! |/ s5 t
(3) repeat
3 t* O, M8 t1 f" u <statement sequence1>;
0 q+ r5 U$ }6 n% p1 j7 ^! { z- i until <condition>;
% v+ D2 z! m+ ]1 h& L( j7 h (4) for <condition> to <condition> loop
% f! x; \' u; @& i$ p4 ` <statement sequence1>;; t' c/ A5 X n- j2 O4 K/ L
next;, C, {- o4 h1 G9 E( X/ R7 M6 q! W7 P7 T
3中断语句9 t; m& W6 K: J- K4 R+ f
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
. h% Z5 s( ?3 s7 H; F; o7 ^还有很多，如有需要我把资料发到你邮箱里 / u* o: X/ c8 J. ^; v
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