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发表于 2012-11-13 08:48:12
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1判断语句
|. E0 t& l" u0 _1 ^ if <condition> then& ?$ |# l/ n& F& M
<statement sequence1>;
; d7 S- R" }' X elseif <condition> then C$ w: z5 W0 W) b8 r5 O+ P
<statement sequence2>;! p8 }9 |" J/ [* ~. R! r) E+ T
else : T- _( f" a5 A4 X3 ^5 f( U$ ]
<statement sequence3>;
; k& R0 ^3 {2 n9 q% s5 e! y) v end;# l- u3 `! C5 o* h
如果分支比较多,用:
: s6 a# a) N6 a& e0 |+ V' M6 D inspect <expression>' C! g3 x# Q: T1 W5 O& L5 _+ B
when <constant_list> then; S1 A1 f% B0 f6 f
<statement sequence1>;* U2 X8 c' S7 R* b& n2 C! L! P e
when <constant_list> then" E5 V8 `0 |9 b8 p9 n, h
<statement sequence2>;
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else, [- e* I! m7 ~) V2 Q
<statement sequence3>;
& |; G: U$ M# `. y3 [+ tend;1 H( v9 o1 w* x4 r- a
8 h* A0 D/ S0 k3 t2循环语句1 L4 c0 x5 \3 N5 T9 X) J6 E R
(1) from <statement sequence1>6 a7 @! ~0 H/ |2 i
until <condition> loop
' j4 N0 I$ v, x* h& T <statement sequence2>;
6 v8 N$ m( j; R' |9 e6 L% }$ C1 v end;
, T, F, @% }$ _9 f1 x (2) while <condition> loop
. A( v- ]0 t/ _( ] <statement sequence1>;) F& y) O$ \- ^) S0 h
end;
# ]& N$ F2 B% G/ ~0 y$ t (3) repeat 2 |& i& }9 g4 }. M8 `" e8 E5 T( _
<statement sequence1>;
2 \0 R" Q) p" {% C" R# h3 x until <condition>;
& X7 u3 @1 g# W9 H7 r, p0 f (4) for <condition> to <condition> loop
$ y# a4 [2 ]4 }1 @- U8 C <statement sequence1>;- u. m+ H* T& ? @% N
next;
/ M% |: _) X2 e- n R) v3中断语句
& Y4 e/ F* K( Y5 z7 U- O waituntil <condition> prio <integer expression>;6 Z! F! `' E1 a" ?- O0 Z0 p$ ]
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以上为常用的函数!
7 \, ?$ A4 l8 W5 I: H7 \还有很多,如有需要我把资料发到你邮箱里
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