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发表于 2012-11-13 08:48:12
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1判断语句
: K' M+ n3 Y, n" T# N if <condition> then; C R5 s' U! j( \
<statement sequence1>;
2 W: T5 \ S7 o: b4 T( L! \ elseif <condition> then4 ]; t. ]6 m4 L
<statement sequence2>;
+ s+ s% l& E H! C# o' Y else
% `8 R& x3 i/ J# {) B: Z9 I7 h <statement sequence3>;
O" v; m1 C6 f/ a4 P% e end;
6 R5 t' g' J( O' y' N+ R2 y如果分支比较多,用:
5 s! z( D* V1 p inspect <expression>; a7 @8 G5 T1 C$ L! `/ n) z
when <constant_list> then3 r7 n( x# [1 `! P8 \. \! x7 \
<statement sequence1>;
. H- E& F' N; P9 N8 h when <constant_list> then
, ?( s& T' W) H' P2 v6 l <statement sequence2>;
& k/ B: @3 O' `/ ]7 F ...
) e7 p( @. l7 r else
' g+ v9 K1 C2 B h6 v <statement sequence3>;
* x6 l6 ^9 R' x: kend;
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H- r3 o; G, }' `8 {/ P; s2循环语句
' m' ^' X$ }5 }. V. @ (1) from <statement sequence1>
9 X4 t* D x1 ]4 l' t% B until <condition> loop
' P, x" B+ j9 T <statement sequence2>;7 D, ]5 P9 \" h' g( q3 D
end;
, t, H, I6 A& o2 w% x (2) while <condition> loop/ |& E( M" [7 i6 r. \ r
<statement sequence1>;
R F- \5 d( X end;) o0 J( e& O: E2 h/ |. f3 B6 F: P
(3) repeat 7 w4 v/ o' u! F! V
<statement sequence1>;, [3 C- |0 o0 t0 d# N
until <condition>;
# T' v2 [& n1 Q3 T9 H (4) for <condition> to <condition> loop
% S& S) g O1 n3 ~3 f# y <statement sequence1>;/ J. |- l9 F. s+ L
next;
' w+ U+ y& d2 q; b8 s* G3中断语句
: ~/ t+ E% N h, G5 n waituntil <condition> prio <integer expression>;0 j9 z3 ]$ l& g5 z% P0 \
3 ]' e4 z$ H9 {. q) _( m
! o1 n! _: Q- z& J5 }( J1 \以上为常用的函数!; N# t7 o0 J: z$ e( D8 {
还有很多,如有需要我把资料发到你邮箱里 4 Y" {$ _+ Y7 f! J
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