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发表于 2012-11-13 08:48:12
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1判断语句
; ` {# e% V" G& z if <condition> then7 R4 h8 R3 U4 j
<statement sequence1>;
. r! b# k; s5 ~* O4 P# X5 R elseif <condition> then
* o! ]2 f0 r2 W @. u. k* M; ^4 U <statement sequence2>;2 E8 X/ d8 U( j( Q0 [- O- f
else
! Y, }) j2 L; v# M) G+ [) a <statement sequence3>;
% l! j2 A o1 G9 u: p1 w+ e! \ end;# x' N2 x; H8 l3 }1 @
如果分支比较多，用：
# h; E- J6 H0 A% u; \ G, B: ~ inspect <expression>3 \( g. h F B2 I
when <constant_list> then
% p; y& r; s) b$ F r0 M8 f <statement sequence1>;
5 g9 h; {. p. F when <constant_list> then, b) A9 B9 M$ y0 U
<statement sequence2>;
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else
s b- h; l( J0 Y) D+ f <statement sequence3>;
8 u( A- T& }+ q* x3 Z" C; send;
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2循环语句: O; A O- p# K9 G0 S/ c
(1) from <statement sequence1>$ O/ W U2 D4 d8 j
until <condition> loop
$ X+ m# I. @3 O- k. T. b$ b" [0 K <statement sequence2>;, d2 t$ e: v1 O* G* H2 r
end;
5 h, y" B4 _( |5 Z, S) O7 t9 } (2) while <condition> loop, w7 Y h: F2 r1 h. ^" C
<statement sequence1>;
6 Q" W7 G: B0 r7 t5 L end;
8 b" b. N0 N* r- E1 H7 M (3) repeat 3 ^8 W. T& c- m- R
<statement sequence1>;
& e3 F) i& B: t5 a! O9 {/ X# ~$ z until <condition>;" \' n8 {1 [2 U. k+ m) p8 w2 u. [5 d
(4) for <condition> to <condition> loop
2 i: z; r0 Q0 `% N' E <statement sequence1>;
2 `1 j/ B" ~) V& ?# X; J2 ?( K next;5 N; [, j1 T2 p* V
3中断语句
. q/ Q" k: t( t9 g waituntil <condition> prio <integer expression>;
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以上为常用的函数！
o0 y' d1 j2 X7 Z还有很多，如有需要我把资料发到你邮箱里 % G: a- k8 d( `5 F4 z! y# H
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