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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句( ^8 F- c; z3 _' F! C- J3 u
if <condition> then# K! z( W+ e& ~9 u
<statement sequence1>;
! `, |3 x1 V* z7 B( k elseif <condition> then
* D- M$ b5 Q/ V" y <statement sequence2>;5 b9 R. z0 t4 u# N# X5 `
else
& q/ s a% R, u/ g5 H7 L <statement sequence3>;
2 B6 r: c0 H/ v& }4 g% z T1 c- F end;
' r. [: X# a$ N$ P5 ^" D1 q如果分支比较多，用：
. w& [6 c# R3 t, m( W( c: Q inspect <expression>- M3 V5 E7 _5 m" t0 o8 N
when <constant_list> then
# r- b/ i4 D9 g: [0 k6 x0 m( X <statement sequence1>;
2 l3 F/ b# }' H- J1 r C when <constant_list> then3 S5 i2 c) i4 @& S( D4 m: I
<statement sequence2>;
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else
# m) C! l a8 o <statement sequence3>;/ E* p. u, a; S; B! w. t5 v
end;- y5 ?0 |- p# p+ \* @) z. @4 C
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2循环语句
" g: q$ o6 N( X f5 d (1) from <statement sequence1>
8 ]# Y% Z6 X) } until <condition> loop% y5 [1 b6 Y6 R# m
<statement sequence2>;: |9 c8 G! z1 l! x
end;, e6 x/ ]& _9 i. X/ |3 v
(2) while <condition> loop0 ?4 Z$ F! W- o5 L* I Z- K4 C3 V
<statement sequence1>;6 p% v" |3 Z1 f" o* w! b5 q: }1 j
end;
) p* y2 i9 }# b( [ (3) repeat
2 Q5 E* x% S+ {$ @; D- d <statement sequence1>;
- y$ d* @, ~4 t7 u, w. [ until <condition>;2 Q, m/ V' ?5 V. |$ P
(4) for <condition> to <condition> loop2 ?# u, G) c8 P2 t( G
<statement sequence1>;
5 ^) q3 {! M7 Q5 a% W( i! v: | next;! J. ?& M5 M" `# G" \6 W3 v, c
3中断语句
% j- n. r5 h+ z waituntil <condition> prio <integer expression>; Y( m' `+ ~. d+ N# ` u/ V7 W
! [# ^! F6 a, l, l! o/ n) B" s* W
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以上为常用的函数！
6 b! q4 I K% S$ u! u+ v- U还有很多，如有需要我把资料发到你邮箱里 % r% \2 b* Z$ o3 F, O/ L
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