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发表于 2012-11-13 08:48:12
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1判断语句9 U; G) w* O8 ~& Y' ]6 c7 M
if <condition> then
9 X9 c0 m9 {" J5 t <statement sequence1>;
/ b6 J7 H3 T r, T4 B elseif <condition> then2 t9 d! T! E1 L4 B8 v j
<statement sequence2>;
7 s" m8 M5 N1 v else
! T& e1 G% a2 m, Y <statement sequence3>;( \8 I% f" y! q/ e
end;6 C8 o3 l) n" o" ~
如果分支比较多，用：
$ r4 y; T Q8 n: _4 A; z inspect <expression>7 F' `9 W3 s7 `! Y9 `2 Q1 e
when <constant_list> then0 O4 Z) ], \! J e# t
<statement sequence1>;
8 v! G; _& U7 d* m3 m; Y. y when <constant_list> then
" Q3 C6 V/ s' }: \* _/ w <statement sequence2>;: i9 E2 @- R! l8 \
...
0 R3 _4 B5 U {% u9 B+ H9 _ x. b else
0 E7 z* t- V$ O3 u( V2 K% U <statement sequence3>;: o3 L. [+ W7 D' u- Q V9 _2 J
end;$ `- r0 t* [5 ^3 S& s5 d
# `0 |% k% M: Q) v& G. ^2循环语句
. w7 [4 k/ t! G. v9 m (1) from <statement sequence1>. E; @1 d b; \; @6 ]' y
until <condition> loop2 E2 c2 P1 @" l+ G) a' T! ~9 M
<statement sequence2>;0 v7 H- r8 M: d# m* S
end;' q. p [* v$ k) y$ U
(2) while <condition> loop
/ G9 s5 M! w1 a7 `' A$ X9 x, z <statement sequence1>;0 X% G/ U& U, C" B3 `: H2 }' e
end;
7 `8 Q7 Z! t$ |2 I, y; | (3) repeat
8 ]. g5 i: _; d. [$ D <statement sequence1>;1 |! c( l% }: ?5 R: [
until <condition>;; I# z$ S9 j) ? K" I
(4) for <condition> to <condition> loop
$ L# e/ ^% A- i2 j( v <statement sequence1>;
2 @+ y; ^. l8 _8 ]( C, ~6 G2 ^ next;! c0 g0 \2 ]3 j7 ?8 ?/ u2 h8 D; Y
3中断语句
& }! q) X+ r/ H+ C7 \ waituntil <condition> prio <integer expression>;
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$ x; T$ E X+ Y0 C; p
以上为常用的函数！1 r5 _8 [8 C; A9 i9 b
还有很多，如有需要我把资料发到你邮箱里
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