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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* }/ @3 J& G6 H( i7 x" G2 I+ i9 Q
if <condition> then6 G/ V1 i( ^( l# J
<statement sequence1>;
5 R! N* W# F. A- r, p o elseif <condition> then
, `' w8 M K1 r/ G <statement sequence2>;
% E- ]7 A$ d3 \( ~ else
3 ]. f) x H' F, n d# u <statement sequence3>;
( d. L9 V; ^% m- b0 w end;
; C) p! L1 x! l" D如果分支比较多，用：; F' |5 n: d" R( B! z) j b+ U
inspect <expression>4 R- s% @/ o# C; ]0 D
when <constant_list> then- m0 @. H% x5 p9 m a) H
<statement sequence1>;
4 I& q; [: l J$ D+ W% w1 W! B U when <constant_list> then
# p) N8 B% S$ ?9 [, E6 b3 ]: a" Z6 A <statement sequence2>;
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else
. C7 y: G2 Y% K$ v <statement sequence3>;, z& f0 t+ \# a4 z: L' ]0 R
end;
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2循环语句
: v! S% Z2 x" v6 y% j, } (1) from <statement sequence1>0 \# s d- R) q. I; e
until <condition> loop
/ B+ y4 A' H5 S( R' ^# } <statement sequence2>;
; t' N1 ]- w! w1 y) z* w @ end;* Z9 `" O' h, ?2 h
(2) while <condition> loop
b' Y$ A" u0 f( V4 W9 Q4 Q" H <statement sequence1>;
5 [+ i, X1 U: a. I; a, U end;# \9 i. n7 t7 i: I: l' W& n
(3) repeat
, j6 m3 {" P; K! z9 }6 | <statement sequence1>;2 }8 |7 o* C/ H0 {
until <condition>;+ a1 H' _# M0 F7 a! F6 w7 E# o( }' V
(4) for <condition> to <condition> loop
+ W: r; V# Y5 l1 G1 R/ B <statement sequence1>;# u6 O% d) {& k' X9 e
next;
; O" b, g2 Z3 S, W) r3中断语句
/ G& o- R5 S7 `+ H$ V waituntil <condition> prio <integer expression>;1 L: o9 | C2 }& `
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以上为常用的函数！ J7 z' H& q/ `
还有很多，如有需要我把资料发到你邮箱里 2 V7 H8 R% X) o( _8 m
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