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发表于 2012-11-13 08:48:12
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1判断语句% m+ M. {7 J9 ?; w
if <condition> then3 a4 z# \8 q, g
<statement sequence1>;+ w+ b5 h2 J/ l6 B
elseif <condition> then
' I, g1 g) l8 z' B; N! a <statement sequence2>;( z" a4 g- k# }4 a8 U( X, n8 X; Y- ?! w
else 6 U# z! \! G4 [
<statement sequence3>;
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如果分支比较多，用：
0 P4 X9 a) ^( `3 B" e3 [( E% q inspect <expression>( g! Y5 g% M7 t9 P
when <constant_list> then2 H$ {6 E3 G) b9 z M
<statement sequence1>;
g+ a6 L* L/ l% W( W$ W8 j. `0 p when <constant_list> then+ B, } ^6 `. r
<statement sequence2>;1 @; ~, e# z" P- @
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else
0 E* |/ s x7 M: t9 T) @( ?" m5 ? <statement sequence3>;
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# M7 E5 F6 O" O& H/ \9 T2循环语句
' b% q; G$ G8 j1 M3 w (1) from <statement sequence1>$ P) Z9 G- ]% @+ M+ ^$ B4 a
until <condition> loop
% y1 \, ~* T8 @/ b$ L8 V <statement sequence2>;4 ~( x1 }; g$ _2 p! [% C4 m8 X
end;+ M! N, u$ O7 v# u; R
(2) while <condition> loop3 Z, K; g6 D+ J" {" N
<statement sequence1>;- K2 @0 |+ P( M$ @
end;3 ]9 ]' P+ K9 i% ?) R! y
(3) repeat
+ N: _" W+ y( _, |4 g8 ^ <statement sequence1>;" q( D& J3 \, n; z) t1 v0 l
until <condition>;
/ r* ]" x+ S* B: \& [4 T* H m (4) for <condition> to <condition> loop1 X. J5 }. }! S8 I/ ^% O
<statement sequence1>;
3 |! Y1 w! o3 `( K9 E- F next;
8 ^+ H9 b7 [7 u+ p+ {; u3中断语句
2 p, A, v2 ]! q4 m) v$ i4 a waituntil <condition> prio <integer expression>;6 X& l, a# {( R1 {( E6 b0 [
& m% m) x: W/ G2 g/ o4 g, K
* S# s* X# a6 O P以上为常用的函数！
: j6 K$ A8 [2 _, f/ U还有很多，如有需要我把资料发到你邮箱里 ) ~+ l- j+ {8 F5 r
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