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发表于 2012-11-13 08:48:12
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1判断语句. |0 a: _5 M8 A: A' L7 e% H6 `
if <condition> then1 u7 s {6 I0 t: _
<statement sequence1>;
M! c. C7 o8 v# Z5 \+ T elseif <condition> then1 x) d5 [) }; Z1 N- [0 o
<statement sequence2>;; o* |: ^& ~0 i" I/ u) x
else
/ \) g7 t$ N9 D+ l5 y3 R+ r <statement sequence3>;/ } @' W7 z( t+ S6 | V
end;
; T: d7 i/ K: R. S. O- e7 A/ \如果分支比较多，用： ]7 ?6 j p& c" x9 q6 e
inspect <expression>+ a- N" k) y0 B g
when <constant_list> then8 J% d& _& p' z+ p% A. G" f
<statement sequence1>;) r; {5 |/ h% _9 `& P
when <constant_list> then
* a) M' z. B1 N7 Q! a) l <statement sequence2>;
7 G8 ]0 b9 u4 B. D- Z9 T% j ...
6 R, n2 |8 `& L9 f5 L; I9 S else
R) M, P' {$ A" |6 i <statement sequence3>;
4 c- g" E# M; K1 f, i7 bend;
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2循环语句
% o0 b k* i* v% Z (1) from <statement sequence1>/ ?1 x4 d9 _' R. w
until <condition> loop
/ H5 A8 u6 x3 ` q: g <statement sequence2>;5 ]5 O2 t7 D0 ^
end;
1 |6 T, [ T+ N7 j1 T0 J (2) while <condition> loop
& H2 E' e5 }% ~* Y) { <statement sequence1>;
) u. r: @: Y9 \) W) m; r end;
7 F. Z, ?* X. H ]* ?( v; U (3) repeat
6 _% W+ U$ ^1 `! G. x <statement sequence1>;* E: s! T& u+ t7 g! S$ d
until <condition>;, f5 G7 Q( J# w( G" S
(4) for <condition> to <condition> loop! h7 E: W! z, ~. @8 ?/ w E
<statement sequence1>;
& }: W( t* O0 |, H% k next;
; A& }9 O" w+ s" R, ]% S/ x8 _3 b- D3中断语句
, A2 n/ O; _- ? x" n3 s& E+ @" d" d- s waituntil <condition> prio <integer expression>;6 F7 i3 q+ F+ C- A# ~
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5 v- \# P- J* c* P/ P6 q# d1 z以上为常用的函数！
$ b4 l8 x1 N' U) e4 ?" U还有很多，如有需要我把资料发到你邮箱里 7 p- f) y3 g z3 A
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