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发表于 2012-11-13 08:48:12
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1判断语句
2 Z1 w. k- ^$ e1 c! \5 w# q if <condition> then: L6 b2 b$ t, J# Q* a: \- i" u
<statement sequence1>;
" M0 {7 _" l: d: r7 d" X9 R/ h elseif <condition> then6 @1 M1 Y" ]+ A, J& I8 f* }) J
<statement sequence2>;
5 F, T1 ^& t3 L' R else 7 F- J7 J$ l( `9 ^, h* ^
<statement sequence3>;
: X9 K% T6 }8 L6 _! T end;4 {1 j# {2 v' T7 C/ w: A1 ~
如果分支比较多，用：
& z2 R! v6 H ]0 }# E# _' R0 i inspect <expression>) \: ~0 b5 H- ^8 q7 X: C
when <constant_list> then
! z1 P7 E5 l, A' d <statement sequence1>;
% W. }2 d- r( I0 [9 x9 f6 j, N$ u) X when <constant_list> then! ~- ]6 A/ `" Y+ x( |( V
<statement sequence2>;
. C5 s% a% t; w8 E! b; ? ...
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<statement sequence3>;0 e2 y+ v1 V, L* ~
end;
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; b$ Q/ }* G0 T5 G& U2循环语句9 u7 [& E: S& x% _) r5 N
(1) from <statement sequence1>( t1 u! T3 w8 I( f K! G
until <condition> loop
1 m) c1 V: {* k! P5 ^ <statement sequence2>;' [8 C* m* q" j0 w5 c6 m
end;8 |+ u9 Z! B" n* {
(2) while <condition> loop
% S0 R- T# W" X( x0 c+ o9 Q <statement sequence1>;
7 g$ D( o# N9 L7 T: m end;
" O' O6 ~% B" D0 [5 q/ A (3) repeat
8 @( |. i7 X- d( W8 R <statement sequence1>;, Z: B) b7 g0 ^: |2 @* ^; k' d8 x
until <condition>;
% o0 M- Z* o+ E9 N (4) for <condition> to <condition> loop
4 T; C3 E: \ t% j7 D2 f E! V <statement sequence1>;& m: C9 w2 X1 L! C+ Z) Z+ c
next;! O% O& [: ^* I3 v' D) V }6 k% s
3中断语句/ ]3 Y+ b% L6 M. w
waituntil <condition> prio <integer expression>;
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4 k* |! T B% P% N7 C$ q- `6 E以上为常用的函数！
6 B% [3 V2 Y. P还有很多，如有需要我把资料发到你邮箱里 7 L3 F& h+ o5 R
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