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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句# V |# k( L% b/ r/ B
if <condition> then" V, R5 [! S5 s- B( X) o# W- G
<statement sequence1>;
5 R5 A, d) U+ M% y+ J7 c elseif <condition> then
' h! G( y# e7 r) k0 C0 \0 E; v <statement sequence2>;
' T' b7 ~0 d9 Y5 P; h9 |! s else
- C/ m( m' {! X( E( A$ ]. O4 O3 I <statement sequence3>;+ W4 j i* t. k
end;
) Y3 ]$ }* Z3 Y. f4 h如果分支比较多,用:2 z3 |8 ]( Y; h7 G2 x( X3 L/ ^
inspect <expression>, U: a+ P$ ~* e2 A
when <constant_list> then
: s! ~% v a9 q <statement sequence1>;4 @6 I* w4 ?0 M' q. X$ g
when <constant_list> then
7 _9 v3 B* D9 S4 c- H1 B <statement sequence2>;
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else% m; U$ x+ b5 f% H
<statement sequence3>;
- K: d" p) `8 d, M3 m5 Yend;
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$ I" j5 c2 `4 e2循环语句4 q: j' n0 d; o- @9 k4 G
(1) from <statement sequence1>( m+ v. Y6 N0 k0 x# E, \
until <condition> loop
- \( ]( {) ?; U4 H/ `( v; d <statement sequence2>;
: n( A6 M6 r* H/ m% h, ~ end;$ n M9 y; @; h2 `# g
(2) while <condition> loop+ Y2 h1 x! Y! N' b4 W' H! L% `) e5 S
<statement sequence1>;0 }( }% k5 Q6 z: j
end;: U1 v1 B: o7 z; H7 G+ l
(3) repeat . q$ ?7 Z1 }# i
<statement sequence1>;% }* R+ H! W' D8 O; D5 f6 ^7 S9 ^
until <condition>;
3 T% K- P0 x5 @ s (4) for <condition> to <condition> loop" G: M; |* k4 k( n, a
<statement sequence1>;
* x8 r7 N. s3 v2 y3 R$ M next;- e0 Q. B/ @1 p `/ d$ F
3中断语句# O$ C( w8 a1 D& d! i' x
waituntil <condition> prio <integer expression>;5 O. _+ @7 M4 v, P U6 S* X/ E
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3 V5 l$ i1 I8 ]: l) C, a( I2 E以上为常用的函数!
9 |- F( F5 V- Z$ n7 v还有很多,如有需要我把资料发到你邮箱里 ) u2 u& N7 y$ ?( j& h* A2 \, t
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