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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' F( B$ y3 a0 B7 C4 ~, @. d
if <condition> then
. Y' A: K" o8 {5 i, d: C8 d. d8 f <statement sequence1>;9 @ ^( N% _+ G5 R
elseif <condition> then
5 A/ E5 H! M4 w, c/ B8 J2 D <statement sequence2>;2 i0 j7 J d% D# P5 U0 y% A
else 7 \+ ~" u7 y. C$ b
<statement sequence3>;" O" e0 w6 k3 K9 n) e, m4 n/ i
end;
4 H( x' d+ v" G) x5 t* _如果分支比较多,用:4 b0 C/ s1 X$ {1 x$ Z9 k
inspect <expression>
; f* K' x( S, u7 q0 {/ O- G when <constant_list> then
! m, g( H' ^7 {( m <statement sequence1>;
* O( L2 N2 Y: S- [$ [; q when <constant_list> then7 O5 J+ K2 I0 K t6 i& z3 X$ J
<statement sequence2>;7 I9 [& G2 T0 w6 O7 J" o
...- J2 x9 V. e8 u' J9 \
else, R: O* p6 T4 ~ ]/ K2 t0 ^1 a
<statement sequence3>;3 J& I# y8 M6 C: c5 E8 Y* V% c
end;
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2循环语句& q: z+ C3 q, i6 @) Z5 j
(1) from <statement sequence1>5 j. s8 k" y9 h% z; [9 A, [2 f& g
until <condition> loop0 y& p) ]! m: j" F& }8 J
<statement sequence2>;
; H1 S7 }0 M) M# X3 q end;
% U0 B8 Q* p. ]0 R9 ^% t (2) while <condition> loop
& n; d* ~: b7 C- l! X) ^0 d <statement sequence1>;( b2 {. l# G! i0 L
end;7 p9 T. l, x9 q m) g
(3) repeat
7 k' ^ p: s: C8 R: X+ o2 C, R <statement sequence1>;
) ? i$ I2 a* u; G until <condition>;( w3 a# X/ ]& N
(4) for <condition> to <condition> loop" [$ ^" i6 B. u+ z
<statement sequence1>;
/ I- A3 @1 E" \! A next;! i2 e! R! r0 p" y: k5 i8 z
3中断语句
: T, C- ]6 p6 z5 v4 K5 Y4 d waituntil <condition> prio <integer expression>;
9 z/ p+ _) h$ @4 F. e$ i: e1 D- H0 D9 \( [
# Y4 r) s: R% c. Z& R以上为常用的函数!& }% R7 D$ Q& w
还有很多,如有需要我把资料发到你邮箱里 5 Z$ @( o& Y5 e ^* y: t2 j- [% b
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