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发表于 2012-11-13 08:48:12
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1判断语句
' G; U8 ?$ h$ ^* X4 w7 D' L if <condition> then% r) `5 F) g1 J1 m7 l
<statement sequence1>;
. \! z2 u( c. h! A" Z: I d- O elseif <condition> then/ h! _ o9 P" e5 ^; j
<statement sequence2>;
* x S5 i2 J( D! m6 c! m) ?! v5 f else * [ Q+ K6 ^8 J7 y; }
<statement sequence3>; J2 g3 `6 T# y6 B5 H
end;$ S( a$ z A1 t/ v0 |6 P2 ]/ t
如果分支比较多，用：
0 U' g# G% S% ? m) K inspect <expression>
5 q" K. I6 d9 Q3 f2 r' r when <constant_list> then( B5 |" o3 l# l1 L2 Q- v1 h
<statement sequence1>;
$ r4 R! A) J9 j. p/ `* c+ \: {3 K when <constant_list> then
! p3 T* K% g6 B" @+ f1 J- l3 d; B) i <statement sequence2>;
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else
% H3 T) f7 N/ M# Q2 p$ I <statement sequence3>;/ _/ O$ C* S- m. s- d( W% I
end;
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2循环语句- q9 f' i: _3 P% p4 n
(1) from <statement sequence1>
- h! H" F* k {9 }0 e ~ until <condition> loop
; m- c- ]6 t' ^; F- @ <statement sequence2>;+ x6 c' k& v3 }# Z e* s
end; N& |( U1 U W' p% B
(2) while <condition> loop
8 h( R- s8 |7 D& y! E* g1 z; y <statement sequence1>;
+ v- Z# \2 O5 r0 a end;0 d, k/ j% I7 L1 Q w
(3) repeat
! I3 t. w/ K6 r, R0 n" k <statement sequence1>;
, Y2 T! b. G5 }( j until <condition>;
8 u/ H3 R3 B7 S ]2 i (4) for <condition> to <condition> loop7 L3 G4 _; z# y2 d- `
<statement sequence1>;
0 I. N# s0 a" s3 Y0 r next;
" z/ r) E/ @$ x1 l2 b0 {3中断语句
, p2 r9 i% h" r waituntil <condition> prio <integer expression>;* b' R4 ~0 ?. [* H
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以上为常用的函数！
; q$ U5 }, T2 C还有很多，如有需要我把资料发到你邮箱里 . s/ u6 S% T2 T
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