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发表于 2012-11-13 08:48:12
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1判断语句
0 g; a: R8 K3 e% N if <condition> then
' A/ ~6 S# C0 W$ N <statement sequence1>;
( `( `4 W" A% j- d1 `$ ~8 P elseif <condition> then/ ~% v7 Z$ i$ l5 z) R8 g
<statement sequence2>;# x* f# h. r# u! H6 x! O6 y
else
2 r: _& x3 A1 |* [3 T) e <statement sequence3>;; V' W s6 i7 `# {5 G
end;
$ r: q& F- g: F3 ~& g如果分支比较多，用：
: Z! W. U7 F3 Y: C1 Q3 O8 ` inspect <expression>
3 X% K$ \+ y' A& a! N7 E when <constant_list> then
3 X: j, b7 l! U: x8 Z$ v <statement sequence1>;# c& v z) r: I
when <constant_list> then9 ~) C, _+ Y2 l. d
<statement sequence2>;' r/ N5 P; i; ?* g, q/ L7 J
...
) a9 _$ K; ^1 y" w) f( n2 w else
2 O8 b% [% A D. K) F; d* G8 | <statement sequence3>;7 p; Q& f) d; q
end;
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2循环语句
8 `, q( q4 K" E* R9 r9 N (1) from <statement sequence1>
( U. N) ^" ]1 `0 C+ m) ] until <condition> loop0 D( }* ]( H! e( b9 S% ?
<statement sequence2>;3 u5 r0 d( ?6 g ?; \# m
end;
0 u% I4 s i- g R4 C (2) while <condition> loop
4 ^+ L7 N' M! ~, [5 k* [ <statement sequence1>;
: b! g Y. z" k3 {/ a end;
: \$ k2 U" |7 Z& t- w5 C (3) repeat
, C/ k: H, [4 w. t J; O" Q: f <statement sequence1>;5 N. Z! D7 h e0 f5 b8 b4 w
until <condition>;
3 O- V) [) C6 V5 l. `' o (4) for <condition> to <condition> loop' n# S1 H5 w' b; F3 E/ U& Z
<statement sequence1>;& w/ V# N/ x& o4 Q3 K# i+ z$ |
next;
6 T0 _3 u }# y" X }3中断语句4 c8 P# J, Y* F8 A# h' o8 s6 F
waituntil <condition> prio <integer expression>;2 n' b0 g" p2 k+ s
+ [1 ?" u3 {- x6 I7 _( J; c
6 A+ q& i7 y. j% }# M( Q2 o0 S以上为常用的函数！
0 V& ^1 s5 @2 d, b还有很多，如有需要我把资料发到你邮箱里 & I+ _4 s. P; M0 V% [% A# X
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