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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
, t4 `: E5 C2 e) r1 l if <condition> then
% V0 h9 a4 R% `$ G, t <statement sequence1>;
* R1 ~3 I, Z. u4 H' ~ ~$ ~/ ^ elseif <condition> then
( y+ F8 b ^! q: d+ @- i <statement sequence2>;
- P& l- L) E' a! |' s$ u else
; {7 [$ h; M( z0 w3 P5 m <statement sequence3>;3 D% H. H3 n% c" e5 X( t# x6 }
end;
& C6 i+ J3 B b2 Q0 E* o8 m如果分支比较多,用:9 A0 ]8 p5 a6 N+ o
inspect <expression>6 ^5 V/ v$ w- @9 [; V7 o9 h
when <constant_list> then- d& v" j$ [7 \/ E2 v7 `: F
<statement sequence1>;$ b. C+ ]" S: a Y3 L, _" }
when <constant_list> then
6 d" T( G6 u3 A' }1 c <statement sequence2>;) `' M5 c( c5 [
...2 V+ ~4 E) ]- x( w; R2 m; l
else
* b+ ]& O4 D! r <statement sequence3>;3 |3 \ L6 [. }4 i" l3 _' s
end;- m# t7 u! p- e/ H" ?' o( `2 L, f% v
( O* v; x9 ]/ f8 F8 w% u' R7 {2循环语句
$ J9 N3 V0 N: e2 d9 L8 d1 H, s+ ` (1) from <statement sequence1>( o, a J$ A4 n: D
until <condition> loop
1 p- m/ ]! b: q2 A2 |! e0 { <statement sequence2>;) o9 O9 ^; W' U o r
end;8 T7 i8 ?8 @& }- q1 k
(2) while <condition> loop
& ~% c+ a7 t0 e9 T P5 \ <statement sequence1>;; {; A: S0 Z+ B+ l
end;- \- c" S2 T7 {% v
(3) repeat
; ^. U' [2 f' P: @7 t <statement sequence1>;" M( ~' K7 y8 ?' B
until <condition>;3 I! A3 \6 u' v$ D. _( ?( Q
(4) for <condition> to <condition> loop( R4 v0 _& T# k+ v4 T( z
<statement sequence1>;+ b. n* a3 Q' A( P7 B
next;3 \5 W* r3 C% r1 [7 Q% G
3中断语句- h4 b: `3 P: P1 k- C% E( h! w
waituntil <condition> prio <integer expression>;) T: v' W; L1 C& Y/ x) q( o
5 r% q& H& q( h( S7 B( u6 `
# R: g$ X [3 \& V4 K. k, F以上为常用的函数!- c, i. u( `1 J
还有很多,如有需要我把资料发到你邮箱里 ; }6 r- l4 [2 x( R
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