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发表于 2012-11-13 08:48:12
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1判断语句 e% S, u" x: n) l* m2 L
if <condition> then
% C/ [$ ~9 H$ k0 e; |; P <statement sequence1>;
0 ^, i( n8 R# V5 Q% ]7 Y! h6 f9 b; S elseif <condition> then; h) r! }( ~+ t( W% R' k
<statement sequence2>;
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<statement sequence3>;( F1 M2 \) t( G1 {; E: u9 G
end;
; i4 d" I# X2 c: ^' B# U# a! c如果分支比较多，用：
3 J# F* w4 I9 y" }/ e inspect <expression>
1 M: X/ K! X/ A- {' {$ y$ H when <constant_list> then
' }9 z, n; U7 W% ?4 g3 g6 Y <statement sequence1>;% b# _6 Z3 V2 u) h' E J
when <constant_list> then
5 ?: U. {) [% f2 w$ E% n6 j <statement sequence2>;; C4 U' l9 L& ^1 o
...
, g9 B9 e) ]5 N$ X- @ else
: y1 a! z0 x( R: N: Y( ^ <statement sequence3>;& s8 ]0 |' K; V- q3 l! B' ~: u
end;5 s8 Z1 u/ R, T, }/ b
( g% u5 {4 k- i3 q% X9 g2循环语句
; v( |" z4 Y% L9 S (1) from <statement sequence1>
q6 v1 ]( R0 ]7 q4 q until <condition> loop6 j8 Q6 {* r W9 i V" h- p+ G9 Y
<statement sequence2>;# y3 i" v& }' Y+ t
end;
" F6 f- o9 P# t- Z( y# T* T0 b (2) while <condition> loop! f6 N5 q% J# \( }
<statement sequence1>;
3 _" {5 d5 J* M1 A6 t$ n9 Y0 @6 q end;
9 }! U2 t( R; |! w8 X H5 o& } (3) repeat 9 o' D' V+ l$ H R# v# z+ _
<statement sequence1>;
# C9 e3 e4 n, ^ L7 T) Q until <condition>;
: Q" |* J- M. J (4) for <condition> to <condition> loop s K; g6 R8 J# U
<statement sequence1>;" c6 w# b( W1 \
next;
9 p5 \% @% F* C* M* Y3 s3中断语句
: ]0 \* c, ^7 i n5 ^. Q# I+ I: _5 p waituntil <condition> prio <integer expression>;0 m, t6 Q/ _& ^& b* b! v/ E
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以上为常用的函数！% I, D4 k+ B& z7 P9 G/ ?5 F# X
还有很多，如有需要我把资料发到你邮箱里 # \6 V* v4 T! f- J6 p
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