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发表于 2012-11-13 08:48:12
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1判断语句- D: @; p- w4 H+ ?( _$ N# t
if <condition> then/ c7 e1 ~& K% d2 G* b# s" Q
<statement sequence1>;, S& C% n) k8 T" K7 L# b1 ?6 i$ J9 @
elseif <condition> then' J/ p. k% ]7 Q: E# g6 \4 ?3 T: L
<statement sequence2>;% b; G+ c) \3 I4 s! h1 w
else
- u8 r' _$ S; u. m. a7 X f7 v <statement sequence3>;
/ E5 A, k) @, J3 }4 W8 E end;
! P8 I" ]# b( E7 K5 U如果分支比较多，用：
1 c7 d7 c& Y& z+ e inspect <expression>( U6 ]& t, P J+ q9 B3 ~# m
when <constant_list> then
+ O# ]2 b3 p2 N <statement sequence1>;% H6 ^. B3 o) ^' Z" L# j* x
when <constant_list> then
0 b8 y6 s/ H, D <statement sequence2>;
8 ?7 N @: i3 S/ g; ~ ...
+ R; q9 v3 S7 S3 r else
% U2 f( Z- k/ |! p; C9 M `. [4 [ <statement sequence3>;
* y. h8 N2 e7 [" v, m/ q; o4 Yend;( C* n2 q, x" @
( S4 |) E! f" c: V# m" M$ m6 }/ r) y2循环语句
' U' K: Y/ J# h5 \& j2 N7 R1 q (1) from <statement sequence1>7 K2 i6 R: D* H9 z6 K9 d( h- {
until <condition> loop
0 E! h. y) A" q6 d2 `4 a7 o/ o0 u- S$ V <statement sequence2>;4 h4 R+ ?% S, m+ d# E9 N y1 s3 D
end;! E V' p7 j! h" f" k
(2) while <condition> loop
3 f A! p- c1 `- d1 E, G5 d <statement sequence1>;" o9 [! T6 d* z7 Q; E
end;
4 r }5 j$ V! }: u (3) repeat
& m3 }. y# f+ O; p8 y( \0 r <statement sequence1>;, y* g6 o- G; ?' s
until <condition>;. h2 S1 \' e1 t
(4) for <condition> to <condition> loop
! Y1 F) c' x3 [$ O; l7 N <statement sequence1>;3 h" H" W( s! V. y$ r
next;$ g0 C7 m' A& e# C. c
3中断语句
7 z! t* R' {8 ~0 t' ]& W waituntil <condition> prio <integer expression>;" W& K% m# R; R$ B5 ]0 n! s- a
* N+ K: Y# S! P9 O# q3 U. R% ~% |9 Z {7 [; b" s
以上为常用的函数！
: x! u6 ?* ]6 W. f3 E6 d还有很多，如有需要我把资料发到你邮箱里
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