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发表于 2012-11-13 08:48:12
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1判断语句, O, r' `3 l% Y7 B Y4 i5 o
if <condition> then
' }4 S6 M6 w8 X <statement sequence1>;0 X* P* o$ K+ T5 F r3 G4 }
elseif <condition> then+ S/ ~1 M! |' |, K5 }/ C
<statement sequence2>;% s( q5 t# q$ n/ t' J% K
else
; x& k( o8 K- L. f7 D4 s; I <statement sequence3>;
3 H" V$ Y% o8 B& y; e end;4 N! T0 K- z. ~- l9 X- C: z& @
如果分支比较多，用：
3 \3 f5 q0 @8 V; s C0 E! H inspect <expression>% l, \) Y& y4 k( |
when <constant_list> then
3 w- ?$ d0 |, q <statement sequence1>;
0 X( m' Q& z# N: y when <constant_list> then
0 a8 N, v/ g. Y- S+ e <statement sequence2>;) L, r o+ N2 C7 ~
...# O v d: R+ [
else# f) D7 E& h0 C) M8 E
<statement sequence3>;9 z' G5 S: }% L8 o! c, ?
end;+ |/ ~# e- S3 C$ Z$ h q& m
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2循环语句' x ~: l% |! V! z9 \. A* b
(1) from <statement sequence1>
7 f* ?+ ?' D m0 v" O- X8 `) ~ until <condition> loop
* }2 t+ |* O" F x1 m <statement sequence2>;* f' k5 I0 v* _/ x5 X. c
end;
, M. r4 V3 T4 ?6 a- N/ n/ G6 k (2) while <condition> loop
, w( m& r4 b, Z6 t <statement sequence1>;! b. c- H6 O7 F8 r- q0 C
end;
2 v( p7 v& ~4 s, e5 E" ` (3) repeat 5 y- u, S1 z8 \
<statement sequence1>;
8 n; _" u7 M- F* W until <condition>;
! f* K8 ?" f; s( ` (4) for <condition> to <condition> loop
' Q7 x3 E: l% I# E" m <statement sequence1>;: @( z) R7 [' y, Q8 ]
next;
5 x" J- ~# R8 x6 h# M3中断语句5 X; s. Y7 p) b$ m3 h( X K( H
waituntil <condition> prio <integer expression>;
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( f1 c# X2 u$ }" Q( w* Y以上为常用的函数！
) M- |$ C* \. L还有很多，如有需要我把资料发到你邮箱里 $ {. T+ P; D& e4 E. T
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