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发表于 2012-11-13 08:48:12
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1判断语句
# T' L& ^5 J* _( L5 a7 `: y& t" a if <condition> then# d- U2 c* \0 L+ G7 w% ~
<statement sequence1>;
8 `2 P1 L. Y ]& i elseif <condition> then
2 V+ K% @7 b9 }# O2 S <statement sequence2>;
2 i/ U4 ] h0 F% D \% _9 @ else
/ G* I2 I+ o4 T/ I <statement sequence3>;, |9 a. C$ U4 p+ j% c
end;$ k: q; Z- o, q$ a! o- |& D) T
如果分支比较多，用：
# y$ V( U. t2 |$ b inspect <expression>, R* J$ u3 @+ ^ p" k) I
when <constant_list> then O) v( F9 M: C8 K9 Z
<statement sequence1>;
7 c2 k3 ?$ }* z) B1 F( o when <constant_list> then
1 \2 a b4 j: h% e: K( ^ <statement sequence2>;
; @- D, ]2 j3 z+ h" y" c7 { ...
8 M! N9 T/ u) e9 {% y1 q else
4 d R5 F' K- \7 G g8 v1 ~ <statement sequence3>;, P# U4 u( Y# r2 A- t. ]- X
end;
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6 N) L) o) h9 G2循环语句" ^* M! g9 i% T: ]7 x( H
(1) from <statement sequence1>
0 `/ J& e O/ |. j until <condition> loop( W1 w l* I# b. F9 m9 {; Y
<statement sequence2>;
$ [' b, }' n( m7 f/ N% g) h# g end;+ }+ c g" A8 g" }. D6 M) o
(2) while <condition> loop; R" W/ w( a. F: G% u4 m3 S
<statement sequence1>;
( i4 |2 I. ~( R4 S0 J. a) m: e end;
) M3 Y0 u; |2 r (3) repeat G. Y$ B% Q' z- z4 u$ w Q
<statement sequence1>;# B' N6 S4 }/ o6 \
until <condition>;
4 X @+ A0 Z; A' V4 x. Z (4) for <condition> to <condition> loop
9 c/ `# c* \- n* |+ w# @2 q4 W; V <statement sequence1>; m! J/ Y, T/ c8 g
next;9 |' }7 \5 D* O- E5 D
3中断语句3 m( u' J( B/ r# y* Y5 F7 |9 m
waituntil <condition> prio <integer expression>;
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4 q+ r, F6 E% v9 u, u8 O4 k! N6 J! Z& v% J. C
以上为常用的函数！
5 i3 H, d( Q7 S! J( \还有很多，如有需要我把资料发到你邮箱里
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