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发表于 2012-11-13 08:48:12
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1判断语句, l0 O+ n: v8 W8 h' c( F7 Y9 C
if <condition> then
8 @+ w& j6 y( B7 | <statement sequence1>;) y. X; b2 Q5 u2 Z R
elseif <condition> then9 o0 y1 m5 g" L8 V9 S
<statement sequence2>;7 k3 @6 D2 v, a0 {
else
* P% J: O/ j8 P8 l3 B2 O- Q <statement sequence3>;
, A9 c' G* h( e: k" V end;
. X. R9 ]' S( r6 S6 e如果分支比较多，用：
( f+ b9 I/ {- L; Q8 g8 x inspect <expression>
4 t5 O8 P }! ^. o6 ~) J- G. S2 b! R when <constant_list> then
# J! S/ i5 X' p3 f* ? <statement sequence1>;
2 G- Z& _% }1 k7 O) a when <constant_list> then
0 j- w# U! Z/ K; Q1 b$ `; q2 |! h# f/ T <statement sequence2>;
) G. d9 E1 h: b t; ^7 n ...
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<statement sequence3>;
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) t7 ?4 B, K. C9 E8 j5 H2循环语句
5 ]0 a& w/ c$ \1 K' d (1) from <statement sequence1>
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<statement sequence2>;" c. k0 j3 G- _$ M, s0 J
end;
3 G1 N" v2 D- N: m& S (2) while <condition> loop
1 J- A/ S" t! p% K( ~1 w7 ? <statement sequence1>;. R% `3 u9 }1 x0 a4 ^) e
end;: X( |0 \1 m& t8 S+ I/ Y7 ~
(3) repeat , @$ x2 j& Z7 B
<statement sequence1>;
3 C! v1 J% w1 c! l% Q Q4 Z* o' w, ~ until <condition>;8 y! G1 b3 k, J/ ^! w7 U
(4) for <condition> to <condition> loop( ~$ r3 w6 C0 `% v; Y" [
<statement sequence1>;/ W, Y' ~0 N* v" M5 P
next;
# G1 A" k& Y X& `3中断语句
: C, k* O% e: }3 u, [& \# E waituntil <condition> prio <integer expression>;
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' M8 F# Y' d% l以上为常用的函数！
. B! R% d0 X$ R& D还有很多，如有需要我把资料发到你邮箱里 . s. T5 d* y ^; w
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