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发表于 2012-11-13 08:48:12
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1判断语句1 W4 K# M7 \, `$ x2 _
if <condition> then
1 m, E5 C6 ]# r8 {( X <statement sequence1>;
5 x! i3 n% `; Z; t: D! D, k elseif <condition> then
W3 M* l4 u$ {! t, L1 g5 x9 S <statement sequence2>;
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<statement sequence3>;/ Y' [ P, ]; X. R$ d
end;# b- f& j( X8 z' N6 w; I+ v+ s' j6 ^
如果分支比较多，用：
5 ?; x+ [7 }: u; V5 Q$ Y' h inspect <expression>* P2 Y. m4 i- x( ]2 D
when <constant_list> then
' L* X7 ]+ y. a2 y <statement sequence1>;
3 M' {* D3 ?# f9 o: l# z when <constant_list> then; T0 N1 ^# y- M( P, t. _
<statement sequence2>;6 a9 z4 H5 e! \9 F0 N
...$ |0 v5 |$ `3 N3 K# ]
else
" f) ]4 a7 C8 t+ b' D$ Z <statement sequence3>;
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; U1 M V. T% @5 L9 o2循环语句* H* p* c4 d, Z$ x( o: u* l
(1) from <statement sequence1>: f8 T0 T4 O: n' g" N
until <condition> loop; g5 f& z" f' V7 W3 k+ A6 K
<statement sequence2>; [! ]) B/ p3 z, @/ U" Y# w, j" v
end;
& w q2 k9 a$ u/ v& o (2) while <condition> loop& Y+ W6 `% s8 N5 ?: t& l
<statement sequence1>;- X- ^! S5 v: a4 M' c- [% d
end;
0 Y1 H T& b# Z ]; m (3) repeat 2 o0 n8 {* _" K6 z( T+ p
<statement sequence1>;
# [1 e7 e4 M: y. d# f until <condition>;0 ?6 M5 S9 E9 S7 `# e$ q
(4) for <condition> to <condition> loop4 ?* ?4 |# r5 s7 b/ g
<statement sequence1>;# ? N8 a4 B# X. k o
next;
8 t! h3 j9 ^/ r# z3中断语句
0 X* x9 U3 w* f0 r# @% E" e$ L waituntil <condition> prio <integer expression>;
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以上为常用的函数！1 R3 t: f* p! O+ i
还有很多，如有需要我把资料发到你邮箱里 0 l& p' o( X3 b1 H
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