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发表于 2012-11-13 08:48:12
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1判断语句 y( \( m- l8 }1 f7 D( i% ~5 \
if <condition> then
1 f2 [, r% \1 q4 O8 T( @ <statement sequence1>;9 k4 |7 y8 ~' c
elseif <condition> then- ?2 ?; Z1 q4 K7 Q
<statement sequence2>;4 [! G/ u7 f( D6 Y0 T# x
else
6 X! G: A* ]) X! v <statement sequence3>;
& i% [# I4 G$ C0 {, K5 x* @ end;
/ P# J* G/ A# [如果分支比较多,用:
: f/ M5 t! F1 a8 q* U7 V inspect <expression>5 |/ x' k/ m( r. `6 F) P6 f
when <constant_list> then
* c' B1 y8 `0 U5 ^* l8 _6 T& B: Z3 Y2 A <statement sequence1>;" W2 `$ ]# `3 F* d
when <constant_list> then
8 [6 c! p) d6 U <statement sequence2>;
/ U/ V+ Z' m2 u5 n& e' ^0 T P ...
& }) D$ b; f8 |) s, r9 C else
6 Y# o0 E2 B l- Y- o. @ <statement sequence3>;
) C) X) z4 z* X* L/ o8 C& |( xend;) k; u% G8 F2 \$ Q
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2循环语句- ]% M- ~, I$ ]4 I7 a. c6 F" D
(1) from <statement sequence1>0 G& q9 l N8 K/ ?4 A' y* Z% L
until <condition> loop1 |( ]* k, i* h7 E& s
<statement sequence2>;
# t8 d3 ~, \. `0 L9 J# ^, t end;
9 Y0 u q: F9 I* O5 v5 ]: ^4 v (2) while <condition> loop o: p/ ?( i5 Q1 _
<statement sequence1>;
, ?1 q/ x/ M/ Z/ @& h end;+ g' M! K3 Z( i
(3) repeat * t, a I0 x# y6 ]3 U8 E# ]
<statement sequence1>;) m$ _: w8 g. E o5 | x
until <condition>;) V' }2 s. _3 y0 O5 { R
(4) for <condition> to <condition> loop6 M( f. K9 ^. I! e# C8 ^
<statement sequence1>; r' i+ y7 s. T4 E. E! H+ P2 R" i6 d
next;
, a, O7 J6 {' n" S& ^3 P# Q3中断语句
: S* }/ J8 G: m' v' H3 I# m9 i waituntil <condition> prio <integer expression>;6 Z" E" O: A& l" ?* H
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以上为常用的函数!
% K b0 I6 T( c4 _0 H$ C还有很多,如有需要我把资料发到你邮箱里 ( R# `% H" o9 Q6 l# o" {( z
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