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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4 g& b' B- M& i5 a% q- q7 G
if <condition> then2 x8 p' Q2 L; s, n
<statement sequence1>;
2 A4 b- H$ A8 a elseif <condition> then/ [8 ^9 F0 T4 E0 L3 |2 w$ k
<statement sequence2>;
4 G7 H# A6 Z0 X% u3 K else ' W: z' e/ R/ U/ a8 |, [+ t; c
<statement sequence3>; H# \2 }0 w0 {- {/ m
end;( F# u5 W4 l6 Y% C! t/ ?) N
如果分支比较多,用:
3 a z1 @( C; J- u) W; a% {& w/ X inspect <expression>
0 z# W4 N2 [4 {& Q0 b' @$ Y, e when <constant_list> then
+ |6 `. j& F% i4 ^4 [ <statement sequence1>;. v- _3 f- L, w# E
when <constant_list> then9 q, q! Z# u# F7 {: k
<statement sequence2>;& R4 G8 z$ H* @* L7 f n
...
8 r4 Z4 p2 F) K else
/ U. K: a& [3 h <statement sequence3>; H' w X& U5 d, a% t9 c
end;" t: m O( k- K) _4 Y7 d+ |9 S
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2循环语句7 T0 g. c. t% l7 m) E8 l
(1) from <statement sequence1>7 P: u3 ^4 c' [
until <condition> loop
' ^ f0 W3 c4 r0 i+ w6 i! n5 g+ P <statement sequence2>;
2 C: p4 p3 k0 q end;% g6 M. o% [6 P3 V0 {& V
(2) while <condition> loop
) W8 O, U! B# z4 F <statement sequence1>;* ?+ e& ~6 w/ N f$ y
end; q, W& M7 p- v5 B! N
(3) repeat
1 l+ P, d0 y# a2 }2 Y( e# v6 i/ g! `; C <statement sequence1>;
- o) M, v. u+ l) h1 J until <condition>;
) G, o" c, n2 d |+ u (4) for <condition> to <condition> loop7 V* S9 h5 J+ r; f$ f
<statement sequence1>;
- c c4 D% _" U( Q& I8 u next;/ S0 |, W: X1 @+ t; ]' E
3中断语句
/ ? g0 G1 v8 {7 r waituntil <condition> prio <integer expression>;
# e* U% q4 i6 d2 P0 S( [; ~; W1 f, l r
& _& i0 ]8 P. |/ n6 P以上为常用的函数!6 U$ s% F. M5 w. s/ }6 M/ x
还有很多,如有需要我把资料发到你邮箱里
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