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发表于 2012-11-13 08:48:12
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1判断语句9 p2 g& q" g: B5 a4 i
if <condition> then
( h3 K; f8 v) s <statement sequence1>;
0 \ q- ]1 Z9 n# ~! F" Q; R elseif <condition> then
* B/ x% O/ ]+ J6 R9 g+ w <statement sequence2>;( u' ?) \) D& x( K+ f
else
3 b) o0 d9 |% S, M <statement sequence3>;
. K* i) {6 e" k o1 r, o; ]! W6 I end;
; r0 H$ D! M6 c如果分支比较多，用： K6 [. G; B6 o( r7 t- t4 ]
inspect <expression>+ k, |( M/ w: w+ A
when <constant_list> then
; j& Q" M, @: L& B <statement sequence1>;
' t: d2 r! G9 c8 a' D when <constant_list> then
! V& _$ {# r; D8 |8 \3 J: v <statement sequence2>;8 W" o) Q" j% e% [5 H
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else5 u F& P* c K
<statement sequence3>;8 A2 D* M" n3 M V6 c2 a
end;: }# _6 M8 S5 p, J9 V9 a
8 \8 d" W0 N2 [& v2循环语句. R, I6 v$ h3 M; _# [8 X# `
(1) from <statement sequence1>* Q4 a1 h Y. e9 S4 n8 G2 O
until <condition> loop
+ Z! L1 Y4 M0 \' l# n0 C7 f <statement sequence2>;7 H8 s8 U$ a' T+ y
end;
|; p- e% u2 q2 P1 Y! P ^* r (2) while <condition> loop% M Y6 f P- u) G) k. g
<statement sequence1>;
C# g0 G' z( _' P' {& b. o# E end;( C+ w2 Q. D/ C$ }$ \
(3) repeat
: }+ F0 V3 H# S* ]: E! w7 J <statement sequence1>;
3 ] k/ c, c' C' G3 s! S0 P# v until <condition>;. b1 [ s/ p5 X: F) P
(4) for <condition> to <condition> loop1 V7 s" L _5 I0 v8 U) k/ ?8 ~8 z% [
<statement sequence1>;
0 ^( g; a# t2 p9 m next; n8 N, Y: Q0 W: _
3中断语句
, N" M Y0 F' B# t2 [ waituntil <condition> prio <integer expression>;! C5 Q; D! \1 b
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以上为常用的函数！
8 @) U; u4 _' G M4 J还有很多，如有需要我把资料发到你邮箱里 ! a6 X" h5 t- K* ^7 m
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