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发表于 2012-11-13 08:48:12
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1判断语句, j% e }$ {# f; M$ Q
if <condition> then. u6 d% j9 g- J: O1 t/ d& F
<statement sequence1>;
4 D, i2 ?0 m, y( I% p3 t# T elseif <condition> then
: M) i! C0 t k' `( ~1 z1 w <statement sequence2>;3 z4 u% W3 s3 P6 l& L) _
else ' E2 ^: J/ V+ E
<statement sequence3>;; q8 V% O8 [: d# h, Q
end;5 \$ o' v- M" I% o( o
如果分支比较多，用：
% F7 f4 R, I0 }' P: U! V2 ?" s. w inspect <expression>
+ w6 ]; H; ~0 @' o3 n. [ when <constant_list> then3 k2 v) h1 v6 Q' v$ D9 R
<statement sequence1>;8 O2 B5 M" F- ~! J0 n* T
when <constant_list> then
7 U) Q/ n4 [* \+ M" b% s <statement sequence2>;
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else
! @7 P- f7 D1 I; X <statement sequence3>;
- K* p9 a: r8 ?2 B fend;
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2循环语句3 `6 _9 ~ o7 S$ Z2 ^4 j* Q. U8 c
(1) from <statement sequence1>
9 [9 k1 n, F% z3 d0 J until <condition> loop8 n$ E7 ~: s! k& i* n7 @
<statement sequence2>;2 Z; y: B0 j( ]
end;
% m5 P" ^6 |& I+ o (2) while <condition> loop/ Q7 \* O9 D: D- D
<statement sequence1>;
4 @ [/ I/ q; P' B6 m end;3 ^8 S: g0 a3 G7 o
(3) repeat - l. U1 B% j& s% C, E; m0 _
<statement sequence1>;* e4 [8 `7 x% X. J2 m6 k( C d
until <condition>;
1 s$ Y2 h, j9 u. r9 y (4) for <condition> to <condition> loop
; @0 ^1 d/ N. h5 f <statement sequence1>;
`) j; S: j7 r/ o& t% G3 u9 t next;
: d5 x" H1 J; C, G5 ^- {3中断语句
0 s- j/ j/ _6 q( d. V waituntil <condition> prio <integer expression>;
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以上为常用的函数！ W G2 A" `9 I" P, ~' R
还有很多，如有需要我把资料发到你邮箱里 3 {; k8 u! E# c1 a
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