|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句( b( s* k& c, d* l. x
if <condition> then- Z5 N$ V% ]' G
<statement sequence1>;, K$ ]* @7 }7 E" {0 ]3 {
elseif <condition> then
! R/ b: b; Z. [* {) s' q* N) c, D <statement sequence2>;! G- V; Z- E- l2 ~$ c
else
- o/ u, e# B% _9 u1 }; f% `& [ K <statement sequence3>;. W5 S6 }( B5 j* u
end;9 P" k( V3 z; s! }% P+ B5 n
如果分支比较多，用：
" \: T% `: q# d inspect <expression>
1 \7 D1 d P! d$ T! @( _! h. R' w when <constant_list> then+ \) V4 I! L+ c) `4 E/ x) j: k( K
<statement sequence1>;
! P V2 v8 L' H1 p: t6 P1 ] when <constant_list> then
6 L$ {8 K& W# w- M3 `8 q4 p <statement sequence2>;
% E! T+ l0 a/ E% q6 r ...
& S1 q* \% q1 I: l7 n6 x: b9 f( H5 p else6 [$ y7 R4 S2 Y5 V+ h7 w
<statement sequence3>;* F z$ v) ]; v2 T0 a1 p- n
end;4 Z. _% b5 o. t3 O. D( _
# O3 G1 y. E* r7 l2循环语句
, o3 U O! P/ M5 k% | (1) from <statement sequence1>
1 a/ `" v* ]* u9 S5 r' } until <condition> loop! Y4 _& d; u7 T2 g# g. j, P2 \; i/ T3 I
<statement sequence2>; \* H! p1 F6 c2 }
end;
( S/ [3 H6 X/ ?1 u0 S2 z/ t3 k7 _5 F (2) while <condition> loop4 T) Y% {4 x9 z5 S, V; a) c9 H
<statement sequence1>;
0 D5 z2 D; s5 p1 \6 x$ w9 z end;
: I* F: X3 P* k+ r# h: Y0 t (3) repeat - Q+ I, Y1 E9 {. u
<statement sequence1>;9 r( j D1 N6 z8 y: S7 F, `
until <condition>;
5 \0 u. Y7 X5 S9 I! C (4) for <condition> to <condition> loop" F+ o' |5 y7 E" B$ Y
<statement sequence1>;0 S* c5 W4 G% \
next;
& k0 e3 w2 h/ r* ~, |' [3中断语句9 v3 a4 m1 w0 d6 a/ z& B0 F+ ]& [
waituntil <condition> prio <integer expression>;/ k& E$ J: h) ]+ ?' j8 E* q
) v! S8 C3 D8 _5 O- r1 D, j8 l: j
" x; U$ L$ k" z+ W1 H+ G以上为常用的函数！% k9 Z+ D& v: ]9 B6 w7 d
还有很多，如有需要我把资料发到你邮箱里 - y( _- y# P, Y% V) e
1 {% O) L8 h2 h- I- D
& b7 i4 c4 Z: [" X- ?' A1 q( {5 G- P! O7 j
; z# o+ ~2 v b' S2 ^: }2 f 3 f3 B0 w! F) [' y+ q+ d. h4 a
: x+ V2 M( f- s/ O/ B8 G7 y" S! q
' s$ X- X+ Q [7 C- t8 a. ?/ h
. w# o; M6 A; W
0 S4 r8 J: ]. n* W+ ~% @0 E
8 r) W5 b8 o' W: L$ F' Y- m; e1 }5 ? 2 X3 f; @. t* y; k3 _% \, ?# ^
|
|
[复制链接]
