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发表于 2012-11-13 08:48:12
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1判断语句3 J9 x1 q* n3 Y0 P" {$ @3 l
if <condition> then/ u5 Q' C. z* {' }& q3 \ k. Q
<statement sequence1>;
$ m% k% O* c$ ? o9 ]- g' D2 _ elseif <condition> then
* k5 J. A# T" [' Y+ ` <statement sequence2>;
% O. I; q# A% v/ n else
- a0 Y7 v& S d$ ~! Z$ m <statement sequence3>;
! ]2 m9 g2 R f) W% U% g, J end;
+ r. h2 o* |% s9 s. _- k如果分支比较多，用：$ t; M, d# Y7 T* E5 \9 a
inspect <expression>
: j/ n" ~% y3 G/ x when <constant_list> then
, n) W6 U" g5 f7 _, [ <statement sequence1>;
6 g* k7 N# `! G$ ^0 v0 T( h when <constant_list> then
* Q5 v9 v8 K. I( d X+ _ <statement sequence2>;6 p: M& }/ S& {0 [9 C! v
...
4 ^6 w1 m; O, ?" B* G* u+ k& q else
3 s c' l7 \( Z* u' g( Z8 f S2 K <statement sequence3>;% q3 e/ b5 o3 M" i. c. B: G
end;6 P2 B! T; g' f
; H+ j# T7 S1 w7 L0 w" T2循环语句
' I* g: g7 h5 K0 k! Z5 H (1) from <statement sequence1>7 e( ?3 x% p) m" X
until <condition> loop
% n" o! N$ H/ K <statement sequence2>;( z* H# D: |9 t3 f/ I. ` p
end;
# |9 m- g% c$ v9 \ (2) while <condition> loop
+ W% t! V# j& b, i2 K7 n. n8 l <statement sequence1>;( a; O9 S2 g3 C3 f
end;) W# v8 r2 R Q* e6 m$ S
(3) repeat + L* B4 C1 {- F; g/ N
<statement sequence1>;% i& g L+ `! e' _: F! V" A( j
until <condition>;0 l7 l! h4 i) u% C/ [" Y5 t3 F
(4) for <condition> to <condition> loop- {, c+ b% ~+ U( Y) w' B
<statement sequence1>;
9 q' I' l8 ^7 L! |# ^( G/ E next;
) ^+ q+ F! F. v4 m/ s/ \3中断语句
4 @5 O& ^% \+ r; F' c; q( Y7 P, v waituntil <condition> prio <integer expression>;
4 m# f9 O. O: [; a" B) u' `% r( |! Y3 k7 C: c9 g- J, X, t
# j' k, ~/ l6 U以上为常用的函数！7 o5 M! k/ m% |4 h
还有很多，如有需要我把资料发到你邮箱里 , u5 s0 ?( B$ R ~: f0 ]* O0 F
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