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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
2 t( m; f5 Z5 x8 C) u' G if <condition> then! ^# B: k0 V; O3 i; e
<statement sequence1>;
: K- w) s! ~7 t+ P* X0 y- w elseif <condition> then
5 u8 x9 y# ~; n& U <statement sequence2>;& l, u! ], s7 \& |6 A
else
$ P% X& j! E8 t <statement sequence3>;- W( c; T; i8 x N' c, {
end;4 W& {9 W) t% A
如果分支比较多，用：
) }; |1 E2 s" l inspect <expression>+ H5 k' O6 a) k( ]% S0 o1 L
when <constant_list> then# Q+ M% M& Z: \
<statement sequence1>;" C/ d# K) t* V2 R& y9 `
when <constant_list> then
" \7 p: u- {0 Y* g <statement sequence2>; U2 o; J6 A4 c! O, H
...2 W9 y$ i( U( Q8 Y
else0 R9 g) S8 L( ~, w3 D7 A' W
<statement sequence3>;% W$ M7 F8 k/ s; E
end;
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2循环语句
5 U8 @8 W3 { U7 K( `' n (1) from <statement sequence1>
" C6 |( Q7 a/ y4 g1 M until <condition> loop5 B$ x0 Y5 a; p7 X2 P1 L
<statement sequence2>;, z2 c; h( p+ Z9 T- F- f" ~) H
end;9 M0 A& T7 K. n+ x" R* E1 y
(2) while <condition> loop
* l9 v7 q( G: A! D$ p/ w$ ^# e <statement sequence1>;+ i6 h' u6 P d/ o' H. A
end;4 k" k3 `: T' g* W, B8 h7 h9 s' b
(3) repeat : s/ P# T6 D0 J$ {4 E! _2 ^
<statement sequence1>;
' \0 y1 q7 h. y until <condition>;
/ T' `2 h) c( x7 y, r3 ~; a (4) for <condition> to <condition> loop& g. g* M( _$ c' s8 \% E8 ]4 `& [
<statement sequence1>;. h$ c2 `/ P$ ~$ B h
next;; W- H; m2 z. |
3中断语句
. E( H" p3 P# P% r# N* ` waituntil <condition> prio <integer expression>;1 {% u2 A% e4 X; n7 F$ q& W* s6 X
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6 J% K2 P! S( b7 b, J& l6 K# S以上为常用的函数！) u, a; P( B+ G2 D% F' J& ~" T, C
还有很多，如有需要我把资料发到你邮箱里 $ D6 T/ m- x' h) [; p( ]( P# g
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