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发表于 2012-11-13 08:48:12
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1判断语句
/ t3 B9 S. ~, h; f$ ^( G if <condition> then) J, |2 R4 j7 A& Q
<statement sequence1>;: d* z2 b. U3 A9 G" c
elseif <condition> then2 U, Y$ B& u) l; V
<statement sequence2>;
% q5 M; ], X8 A3 } else
/ @5 a. u% v% C: C <statement sequence3>;
+ L, F' {% }% n# E) A+ N end;( G2 }% a( }2 b0 ~$ T, Q) `
如果分支比较多，用：
1 M# |# x |1 N" ?' Z" a$ K1 Q inspect <expression>) m: B+ K$ f4 K4 O$ z0 v2 p& k9 j
when <constant_list> then
8 Z1 W! F1 T4 B* ?' |' n <statement sequence1>;
# k' v9 _( D- B/ q6 y+ Q when <constant_list> then
; A: l3 b7 g- }( f5 b* H' j <statement sequence2>;6 q$ `2 I/ ] _# [9 F4 T
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else2 M0 E$ w* P+ B! b" m! J. w/ \; j. y
<statement sequence3>;
# ^8 ]& f2 _, k( y$ D$ Jend;6 t: ~3 v! o2 Z X* L0 w
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2循环语句
: R/ w1 v- h3 }2 h4 N0 F (1) from <statement sequence1>
8 {; A) F* V: d until <condition> loop
# i' B1 P" c' U2 s <statement sequence2>;
( Q* h5 |: o& m ^$ ~5 l end;; |2 R, a1 k5 s
(2) while <condition> loop
; j0 o; e0 I; j3 e/ E1 H9 D$ { <statement sequence1>;5 G3 I: x( ?# g+ X" z
end;/ ]1 `" j' Q6 i' t! ~
(3) repeat $ |' E7 n4 r7 u; C7 T" j$ y& S C
<statement sequence1>;, e- d8 M; r# |2 u' z c) ^
until <condition>;
. B$ X( d/ L* U2 N0 H; N/ f (4) for <condition> to <condition> loop
! n5 J4 G2 P6 z8 b0 y" G$ u4 U& Z- M <statement sequence1>;/ {' n; i4 u" Q* H0 z8 d
next;( Q1 q" X: P" h2 ?5 I7 f
3中断语句
8 B7 X4 j/ @: o( V/ w( X R waituntil <condition> prio <integer expression>;1 E- w5 H( g. q @
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; [6 V+ _7 Z6 y N# |( i8 }以上为常用的函数！
; d6 H, j+ H: P7 ]5 E& v; J; y还有很多，如有需要我把资料发到你邮箱里 7 }) L" o. R4 \, y _
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