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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: y( S+ A+ s' `/ `+ B3 }$ A3 R) i
if <condition> then
* _) R4 \, R- N% \5 s+ i <statement sequence1>;
; M( `7 N) f" i# s( r elseif <condition> then
1 Y" V; m/ s# ?, L+ ? <statement sequence2>;2 C7 r. P6 k. T/ b. ]
else
/ M/ y! B1 F/ W7 M <statement sequence3>;0 x& \0 q$ x2 ]# T& `( R3 F
end;9 ?4 \% W8 Z$ w# ~/ r
如果分支比较多,用:! c; e9 w# }6 E$ l
inspect <expression>
+ a1 \2 ~, z) y: j2 Z when <constant_list> then
) v) \$ v$ r1 V% X; S1 R# S <statement sequence1>;
% M, Y+ {8 q5 ]6 {9 x when <constant_list> then: u# \5 p# v4 a# Z: n/ ~, g5 x
<statement sequence2>;
' L7 R% r$ W6 L* B% S ...
8 }5 R# y4 r+ F8 k' V( Y else: v6 `* [! D% A4 @
<statement sequence3>;9 ^5 P! N, D& k s
end;, b: Y& ~; q# z y! s7 x
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2循环语句& R, G( O2 i( g
(1) from <statement sequence1># ?, h7 q( H8 L" f9 V
until <condition> loop$ `: J$ y; U, P4 Q
<statement sequence2>; u d2 ?2 N: q
end;
7 B3 t, U# j$ F( F9 z) w (2) while <condition> loop
7 E H# ^" @; v6 n' T$ M/ p <statement sequence1>;$ A$ g" n* e3 S8 n9 ~
end;
1 E1 c" Q5 \; O+ i, e+ L3 b (3) repeat R; L2 \4 }: n
<statement sequence1>;% s- N) X+ P: q0 z6 U
until <condition>;* r U8 \- [* C9 q
(4) for <condition> to <condition> loop
( W5 Z4 G8 L' ~* p( A <statement sequence1>;& [. d: k4 k. H. j3 R
next;1 ]% ?" M( B6 z
3中断语句
- d* D( D7 t3 [- j/ M! O' A waituntil <condition> prio <integer expression>;1 T- g- `" I4 F: V
+ F' s- x1 E6 |% C& E
9 k- O1 t# {6 s1 o7 Y$ s3 X# Y以上为常用的函数!/ m7 H, h; e2 ~0 L
还有很多,如有需要我把资料发到你邮箱里 U6 @! r. M3 [: a, N- {5 B) ~
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