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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
6 N3 V$ G1 _' r* q" R if <condition> then
3 k2 W# ^$ z7 g+ G- z5 |( b <statement sequence1>;
' ~9 a3 T @' K, e& t7 O elseif <condition> then
' f [4 [: K0 L+ u6 h& u <statement sequence2>;
9 j: q* Y/ g! J- W# J+ ~ else . e3 z6 W" \; s' G* A
<statement sequence3>;
8 Q2 a D3 A+ @; X0 Y end;: x7 k, p% k7 z# z. s( B @: J
如果分支比较多，用：
& Z: f" j: Q! ^7 D# h( t9 S inspect <expression>
# Z- C' L o. J& I5 c when <constant_list> then
% D1 u( n2 W0 R: q% ` <statement sequence1>;
/ g& U( d- Z& L' r when <constant_list> then
4 g* P$ g* H; ` <statement sequence2>;
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else5 |( L7 k7 q$ W: @7 F4 g( q
<statement sequence3>;% ~, [# \- g+ o5 I" ]; f. r7 \" o: |
end;2 m1 Z: @) O2 l# k( W
/ s4 U- W9 K- [0 F9 |1 e2循环语句& _( s3 a# b7 H
(1) from <statement sequence1>
! j" y2 \9 {$ Z- c @' I- k until <condition> loop6 N9 k! H7 {3 a3 ]
<statement sequence2>;4 g2 [4 ]. |( f
end;
) P3 R) V* i$ v& ?" _# W- u (2) while <condition> loop
6 e" F6 K7 s7 l/ T3 b1 f2 | <statement sequence1>;/ g3 O7 S5 i& m; U$ i
end;4 ^3 I+ L8 R4 A* o
(3) repeat / n# h' K! m# Q! u5 }5 P$ m
<statement sequence1>;3 q2 L" |2 l9 c: Q, t, X
until <condition>;
( }5 N9 d# u3 W (4) for <condition> to <condition> loop
( S8 D/ _7 E4 V3 C( {0 D) Q1 A u. f <statement sequence1>;2 z2 p4 F. ~4 s% q
next;( i/ P) P# n- q" ?2 G" d
3中断语句
' H* L) m n& g* T; H waituntil <condition> prio <integer expression>;: l! G: W+ m+ S# p" Y% b
- b* @& n6 y1 I& E6 S5 g1 C+ v
' k6 x% J; N# c! k" t以上为常用的函数！
4 n( l% e) \& b1 I) [) s+ p1 r/ e还有很多，如有需要我把资料发到你邮箱里 : k8 C, A$ b& ?$ U8 ~( |' o3 I
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