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发表于 2012-11-13 08:48:12
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1判断语句
7 _* N* X8 p0 I; a: n3 E2 ? if <condition> then
' W3 B& |. E4 P+ |1 F <statement sequence1>;3 z& ~# K- a1 _3 ]0 Y
elseif <condition> then! d, l# o1 Z/ x5 m- e- p, Y
<statement sequence2>;
" c. l* { |* J1 B1 D/ y else
$ c3 i# y4 U" R5 V3 Q8 L# \( t <statement sequence3>;
5 X" i3 y9 M+ D" n end;
6 [4 M5 K0 v) S* h" L2 P+ c如果分支比较多，用：# ~+ V: n, A+ D' J2 l1 |
inspect <expression>3 i8 v0 n* q ~# X- {; ]4 Z
when <constant_list> then
; J& s1 _; J) \; Q1 a$ { <statement sequence1>;+ L5 d* d. G( M" w7 k8 a
when <constant_list> then
- _* a+ a, o/ P <statement sequence2>;
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else; E) w3 \! h. b+ E- j
<statement sequence3>;+ \/ ]! ]* u. d9 E2 w$ V
end;8 ]3 p2 X% O2 G! N0 t
- ]% _+ X0 h2 k" w* o2 @; R$ k2循环语句2 K0 f; x8 ?7 A9 |4 }3 t6 b. T) { x
(1) from <statement sequence1>2 _: S. X' s# V' H& ?& M
until <condition> loop
5 p2 z, E. ?1 M% J) b7 F <statement sequence2>;
| }. y- a: Q% G8 z8 X7 F n end;( }0 J+ x8 p9 r( l
(2) while <condition> loop! ?# Z8 ^* j6 h0 A
<statement sequence1>;1 ~/ ?( x4 `5 C) U+ A
end;
- f8 l0 k8 I8 s* _/ p7 ^ (3) repeat 5 X: B8 `: T; e6 T
<statement sequence1>;
' k8 r. A7 W' H' T* ^+ J! T until <condition>;
& o' |! K' f0 I& u" H (4) for <condition> to <condition> loop
7 t( x: r- P( \" T <statement sequence1>;
% h/ @1 @) V1 C- E next;1 Z0 O9 |* s' k+ n2 Y; x
3中断语句
" O& x2 x, s+ N5 I/ C1 k D waituntil <condition> prio <integer expression>;
6 I: q/ }, C6 b2 C% o. p4 h( u* ~- x5 X+ x! b/ w: @7 i
8 Y( Q! C7 e, p3 H& i5 v以上为常用的函数！% O4 h! U' O% V' }
还有很多，如有需要我把资料发到你邮箱里 D& Q5 l% P, B k8 i$ s
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