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发表于 2012-11-13 08:48:12
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1判断语句& w6 D8 s3 c* a' t2 Z/ V r2 n* D
if <condition> then
0 @/ f. s Z& l/ T% }' f; u% e6 Z <statement sequence1>;
0 u2 j0 Q7 n m5 y5 _4 z) x/ V. G elseif <condition> then
, ]3 O: O9 L, P; i$ b( V- o9 C" D, a <statement sequence2>;
$ J3 E# m9 J/ T B: i, u2 J else 0 \$ `/ S( n/ O7 F% h0 L" ^
<statement sequence3>;
: a" f" k8 D& T: h b end;" I% S: _6 T0 W, v& I4 r8 A' h% `3 i
如果分支比较多，用：
3 m9 o$ m" F) X- b* A5 I inspect <expression>
$ U6 c0 \% v: f- h/ X4 E when <constant_list> then. h2 w+ ?1 E2 M% d
<statement sequence1>;+ I% j9 N& ~8 i4 ^
when <constant_list> then6 x: \( R3 h y$ M% _0 |
<statement sequence2>;
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else
, C3 ^% ~$ h& T( x. W, s <statement sequence3>;8 a/ B. s" v X f* I
end;+ K7 q) b+ u/ T4 h/ ^! [9 x# f
2 o& E) ~, N2 D. f1 b h. B. g; d8 u0 H2循环语句
# ^+ ?7 Q7 W3 m5 B, g7 ~( E (1) from <statement sequence1>$ ^ y( w& _& O6 O$ d/ c! o. X
until <condition> loop
- B; m: m& k5 `, X$ X <statement sequence2>;' n1 X P* e8 k$ A
end;
: X' Y9 X; [/ A+ i K9 T (2) while <condition> loop
( h4 Z! c8 g3 r1 Z1 N <statement sequence1>;
1 ?. [! J7 {5 w1 X3 {" F end;8 u( j: l& c u q3 M2 h3 Q5 \
(3) repeat
, m0 d0 e6 E8 R8 [1 N" ~6 \& L <statement sequence1>;
" i( l( J* f) l# n- y m until <condition>;
( L3 C* ?" A3 N% a) G1 S/ g5 h (4) for <condition> to <condition> loop
, L; w8 p4 w" d7 E2 y( D5 r# Z& X <statement sequence1>;
! Z5 o/ s* U! z next;+ d% ~7 G5 y4 B
3中断语句# a0 S$ @8 ?2 q# Z* w8 N; h
waituntil <condition> prio <integer expression>; Q- i& t$ X. T4 D0 f% S
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以上为常用的函数！
* x6 O R$ s* ~还有很多，如有需要我把资料发到你邮箱里 , H) e6 g$ u8 Q) W& I
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