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发表于 2012-11-13 08:48:12
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1判断语句8 L* Z# |5 p2 e! a
if <condition> then
. U4 q* e) Q/ t7 @+ r <statement sequence1>;6 t" @& q y4 |7 e
elseif <condition> then3 F% [# y/ M4 c' R8 g9 K, _/ v1 Y
<statement sequence2>;) l, }( }& K6 J( p- c* Z
else
- L' y8 V( W7 ]) r, { <statement sequence3>;% B, R( l; u% A4 l& S. \" |
end;( C+ R# o6 V' G) R9 ^
如果分支比较多，用：
8 U- k- Z3 m. Y inspect <expression>
; {) {+ \1 P1 w) k8 p( A0 Z( x8 [5 J when <constant_list> then
* s& Z- s. |- D3 j- @ <statement sequence1>;
. M0 I* r r5 z5 S" Z when <constant_list> then
; R4 l* P0 h8 O9 t/ I- S7 y <statement sequence2>;& X/ F: w9 I( b4 t8 v- |! {& c$ @
...
, {1 s) t6 ^+ j, H; }- e; X6 T9 q& @ else
5 g) m( W3 F! ]* t; \- Y <statement sequence3>;# l ^" k! |0 [3 l1 c
end;4 |6 D+ f& A9 F+ C9 f
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2循环语句
. m0 ^4 B3 e" }6 c) j (1) from <statement sequence1>+ q E& F7 ?' U* f3 F
until <condition> loop9 ^6 Q0 q# m8 L3 J4 T
<statement sequence2>;3 d/ c, V/ L* B" P$ u+ p9 Q2 U
end;$ y0 n: ?8 c% J4 L
(2) while <condition> loop
( }/ v/ O/ N" l <statement sequence1>;- G7 [9 y; j4 ]8 O: j. ?
end;0 ?9 Q$ t4 L5 b
(3) repeat 0 [8 {/ y/ J& s+ E8 D
<statement sequence1>;
7 H7 @# X+ X1 q6 }6 F until <condition>;3 d9 C) {. U* t9 a7 c
(4) for <condition> to <condition> loop
$ `! q( c# W" ? <statement sequence1>;
7 n) \3 p& j7 `7 A& T/ p next;
, {" i5 s! O- h$ w3中断语句
! } Z/ @+ k: j( a( d# a( n/ c$ P waituntil <condition> prio <integer expression>;8 Q9 H4 L" y- s$ L/ s- L1 T
; | H. m3 u+ _$ p- N+ O+ d o
8 b3 O% @% j) P1 {以上为常用的函数！
7 I* y: _! G9 {2 A4 b3 ^ |还有很多，如有需要我把资料发到你邮箱里
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