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发表于 2012-11-13 08:48:12
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1判断语句. B% U2 `7 S3 I) u1 T% v: }
if <condition> then3 [3 b# t+ L2 U8 }& H7 Q$ D/ G/ r5 |
<statement sequence1>;
* l/ h( ~( |$ b5 N elseif <condition> then
$ `; v( p p; ^$ X, k1 _/ _ <statement sequence2>;* s/ G9 a6 e V4 A1 M
else
; w! H6 P7 y9 w <statement sequence3>;
! Q- m. {5 k9 t) G, L$ s end;
7 v4 q0 ^4 Q) ]9 b8 s. K0 _如果分支比较多，用：
! o/ _5 |/ Y0 M1 B0 c7 U inspect <expression>
1 `: v# e" ]* {2 a/ y% o& S when <constant_list> then H8 V' P: M0 _
<statement sequence1>;1 a1 r* \: j4 z+ V
when <constant_list> then+ k5 C$ I* J+ {2 T( q4 ?$ {3 S
<statement sequence2>;
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else
+ A$ v H e" {3 J/ k, v! Z <statement sequence3>;- l% J. A7 l! D- m
end;6 q7 t- Z2 b% ]7 S* C9 n, I2 d
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2循环语句
( [# r! p+ L9 C3 e' p; F! `9 o/ a (1) from <statement sequence1> c. c, f% @. D4 L5 I1 I
until <condition> loop
- g; r) Y$ Q: F7 j( ~1 G# [ <statement sequence2>;# ]" [! [/ ?& @/ L$ a, _
end;
# }) f: p& D7 n& j (2) while <condition> loop
, _& T' S/ T n: ]( i! q <statement sequence1>; C) I! f0 y, K& U% ` ?
end;, G, p2 g' [$ O9 Q) d4 \* u; e+ }/ p
(3) repeat
7 f" R; `5 M- Y' x <statement sequence1>;+ M3 ]$ q, b* W4 }/ X" J
until <condition>;9 B* v& b$ M! `5 g+ ]. b5 w
(4) for <condition> to <condition> loop
3 x: \! o3 }% I7 Q& M. J <statement sequence1>;8 Y$ |- }% u [/ A& B& ^
next;
C0 \8 D; N% \. K+ ?& p8 T3中断语句
5 t i6 S) d! L" I# n' a waituntil <condition> prio <integer expression>;
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以上为常用的函数！2 ~' ^; p# ?& R9 q- T1 C
还有很多，如有需要我把资料发到你邮箱里
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