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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
: c/ y2 i! h* e0 l; Z' X1 S4 E: L0 s! H if <condition> then; f8 X5 c+ v; a* r( m2 H; n8 U% L
<statement sequence1>;
3 [* e9 H% x" h9 ?' f elseif <condition> then
& D1 `4 h/ w* q6 L <statement sequence2>;
7 K8 T" O2 v% p M else
+ [' X) q L$ M* c <statement sequence3>;
3 ~! Z$ G/ J+ E1 J% `/ k end;
) Z, S, a4 S q% f$ H5 p如果分支比较多,用:
T% k+ h% q2 x/ {3 b1 Q inspect <expression>4 h3 f: k9 _) W+ E* \# S
when <constant_list> then0 g5 G. c: C- w3 N" d! s) ?
<statement sequence1>;
! N/ _0 V& a6 y; k8 _* ]- F when <constant_list> then' W6 c; o& R9 U+ X: C$ T( m- ]
<statement sequence2>;
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else
% \9 d' {2 u/ J1 i% O3 X* V <statement sequence3>;
8 b3 b8 ^5 j. i4 ]2 Gend;
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2循环语句3 Q* E+ \ m, N; t: _5 {
(1) from <statement sequence1>/ Z$ B7 [2 R; j3 V! u
until <condition> loop ~7 E) C/ q% c# k' B7 _, r9 u
<statement sequence2>;
) J6 b) j) S% Y0 W end;
9 f# `$ ^: g1 a0 p% v* i) r* O ? (2) while <condition> loop, b; ^. l6 |; A+ K8 O# `
<statement sequence1>;
5 g( K: j4 C( b1 V; Z8 v5 f end;. l# T" ]/ q1 N: a
(3) repeat - x) v) Y4 t7 e+ a
<statement sequence1>;
5 k8 p+ [ R; y4 f% u( _ until <condition>;1 E1 Y; @# ~; \1 Z5 ]$ r T8 G
(4) for <condition> to <condition> loop
( v. Q! O ?6 M2 H <statement sequence1>;3 E/ K' f- _& D" e- l& Z/ T! K
next;
4 _- r# r$ w4 c& `! |8 q3中断语句
3 Q( m+ ~- t t Q+ y( \1 W waituntil <condition> prio <integer expression>;
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$ _/ k3 ^, C7 V& Y; }以上为常用的函数!
; }5 C1 B1 g% q4 Y" r& Y还有很多,如有需要我把资料发到你邮箱里
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