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发表于 2012-11-13 08:48:12
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1判断语句
: d5 G+ r5 \( { if <condition> then# X4 }$ W4 l: `6 E$ f; @3 q1 m
<statement sequence1>;; R3 V7 j1 c# |1 h9 X; N; a
elseif <condition> then
1 W6 V. o. l( v) g" p! w! p6 { <statement sequence2>;
" M7 k: l. d& q+ Q& {# E- J6 N else 2 b2 ]1 D, c6 \0 `9 d5 @
<statement sequence3>;
$ ]* ~/ e2 w( I; _/ J end;
0 M, D) Q9 M* W如果分支比较多，用：: a3 i# _( Z' j% e9 n: \; n" \; U
inspect <expression>
( K( i, x8 z _' [# } v+ T when <constant_list> then
/ k) a% T4 F" r. V9 i# g' ?1 t( o9 ^ <statement sequence1>;
" `2 h* D7 r+ V5 W' ` when <constant_list> then0 n3 A s. `1 q6 F# U8 A1 F% k& y
<statement sequence2>;
3 g# x( I4 @2 p$ _! Z: s0 T ...
9 v9 `2 V b" L# Z else
* c, u) f9 R' ^; u <statement sequence3>;1 D0 v, Q5 K: N% t6 H7 z% ^
end;) |9 @6 a" W' ^, K
( U+ U: [& m0 ~# E% S2循环语句; H$ @" b. \, n1 q
(1) from <statement sequence1>
/ F6 E; X5 z/ h; `- g& h until <condition> loop
$ j& J+ `4 W/ G1 |; |: N1 n& p <statement sequence2>;" g/ P$ b! v+ c. ^* _. Y& j8 u
end;
' M7 a4 a5 y# U4 G) @ (2) while <condition> loop% K7 S; y* n2 Q. p$ g
<statement sequence1>;7 N6 o, F& |3 K* X! k. f
end;
: F% H/ W+ C& y4 A5 d$ t/ r (3) repeat 7 s( Z, O; s D: I+ }
<statement sequence1>;& X) @/ f) w! x; K
until <condition>;
8 t, _- c+ m; o# T; A (4) for <condition> to <condition> loop
. p, U" ?" |) y+ L7 R a* Y% V <statement sequence1>;! k# s* F f5 k! j' w
next;; g( D) t8 q Z2 ?$ y
3中断语句
d) e* [2 f( d9 I4 U waituntil <condition> prio <integer expression>;# k; k# t0 X% ^" M! e$ ^6 \' \/ |# N
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以上为常用的函数！
; w* h' z% |0 p4 B* A: z6 h. _还有很多，如有需要我把资料发到你邮箱里
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