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发表于 2012-11-13 08:48:12
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1判断语句
- }5 f9 S5 }. V# w" j if <condition> then) d" v Q' _' n a. M Z% c" r
<statement sequence1>;1 Q: v8 \' P# y" ~4 g9 X' N1 A& t1 d! t# \
elseif <condition> then
4 Q8 \& ]$ ^) u! k0 { <statement sequence2>;8 e$ ^7 D. B. \) n, o# c
else ) b+ h# z- I2 I. s
<statement sequence3>;
! T$ V7 Y* l* f5 a end;
7 T0 c9 B! T, x, q/ {& W如果分支比较多,用:
% z3 H! I& G* M inspect <expression>/ P! a8 a' ~5 S6 Z, F: L: E% c. B
when <constant_list> then
) P. m' T% A* k3 e5 | <statement sequence1>;
5 w' I8 h* w0 j+ [$ Z" x% U) v% g: p when <constant_list> then
% V J. d( h: g4 d! j+ N" x <statement sequence2>;. ~9 d; V. I9 a l: k
...
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<statement sequence3>;0 i7 J0 p6 x5 R% a- r3 C7 \( i8 o9 n
end;
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; h& P7 x2 x( x8 l2循环语句0 q( j0 K m4 x3 e! d8 r
(1) from <statement sequence1>4 h9 b2 O7 b7 _
until <condition> loop# h2 w& z5 s% W% M+ A, z: \( [
<statement sequence2>;
; Q# C+ K% Z5 R end;5 g& Q5 m7 G7 R* u
(2) while <condition> loop
: T( D0 |: l$ ?, f1 W <statement sequence1>;; V" I8 K0 | C8 A
end;( o- K5 ]/ W5 l
(3) repeat * {! }3 D$ Z4 q* l% B) B5 q
<statement sequence1>;
: H: X, L7 L' U/ }% H4 y until <condition>;
- {; F$ j1 v% x3 [- t9 t3 T (4) for <condition> to <condition> loop
; S- p2 O$ l' ^/ p <statement sequence1>;
. L* d' m5 N! s next;
( e6 b4 N1 G' k% S7 W. h2 o3中断语句
Q8 g( T" }. G4 I+ x waituntil <condition> prio <integer expression>;
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以上为常用的函数!
1 d' y6 j4 T6 A4 B' W2 t还有很多,如有需要我把资料发到你邮箱里
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