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发表于 2012-11-13 08:48:12
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1判断语句
6 M4 w5 y1 }# |& b: ~) J if <condition> then
( l2 V) P/ c9 A' Y. k" e <statement sequence1>;7 q# ~5 W, M( i6 z/ ^6 X2 S& T: _1 }
elseif <condition> then9 g& J: S! o( R) S! n/ [
<statement sequence2>;2 f+ Z! y; m4 [# l; R1 o$ D
else
- O* y$ b1 E8 X p7 G/ w7 e8 B <statement sequence3>;" w: U3 b7 O5 C9 p
end;8 i. Q; P4 n Z9 K5 p/ M9 F _ P
如果分支比较多，用：
4 C1 ~/ z5 z! Y, I3 E/ S inspect <expression>
" T. a) }3 Q! ]$ ]1 u1 A' U when <constant_list> then2 M* j+ h$ }# s! L% _ H4 i4 K
<statement sequence1>;
, Z$ \* }" I$ ]+ a1 _ when <constant_list> then8 d4 g& X8 q. o$ u
<statement sequence2>;
% C& J5 Y) e4 e) V6 n ...
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<statement sequence3>;
9 r" W: c: g' n+ w8 p4 ~/ H: @' Pend;
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2 H+ ^9 |2 K/ `7 t. C2循环语句
9 T; s6 r# ^. Z r' d# w (1) from <statement sequence1>
; P& |- }! Q2 m8 ?( o until <condition> loop$ s n$ g6 o7 k4 `
<statement sequence2>;
3 V) g: ?1 a: S5 [ end;0 H u. l, A3 J. M' u9 v
(2) while <condition> loop
7 J+ f, g# H8 F; h+ h- T <statement sequence1>;
' M9 U! C1 h$ P0 S: K end;) K, K: N" [$ I5 Q
(3) repeat - k* i/ k% H& \$ G0 ]" F. V+ k
<statement sequence1>;+ o7 ` K3 j. _
until <condition>;
, b' T) @& L5 i9 U3 ^4 n) O (4) for <condition> to <condition> loop
" u+ Y: r: V. a( U1 {% J <statement sequence1>;& U1 c; Y p6 f7 i$ v3 p6 ^6 `% y( k. T
next;0 ^$ Q, p' v* v
3中断语句
6 a* K, o! D4 x5 G% x waituntil <condition> prio <integer expression>;
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: e4 i2 S" G6 B2 V# ^* K! G以上为常用的函数！6 M% x; F* R5 b7 a0 c
还有很多，如有需要我把资料发到你邮箱里 & M- t( y5 O- O- U' T) s- k& y+ h1 |
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