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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
, h6 H! T3 r4 d/ o' S if <condition> then
) {* y: P$ I+ @ <statement sequence1>;
, G0 Q! w3 K$ Q F+ l elseif <condition> then
5 D0 e0 a3 V$ U$ X# B2 K3 X <statement sequence2>;
9 Q9 X6 D: w0 P' z& W( }, l else
: s. U$ `5 T- [. j2 D( f" C <statement sequence3>;# h7 s$ n' `# N3 X
end;9 V! P3 h5 O J7 d- P
如果分支比较多，用：
4 z P; q/ t1 _$ A inspect <expression>
# K# i& ~# _" X2 k: X- j when <constant_list> then
$ u9 ]3 d* \, m1 l/ T <statement sequence1>;
$ t W+ O9 J7 N% f1 H when <constant_list> then j3 V9 I+ S& H& o6 d$ c
<statement sequence2>;
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else
$ ?& J* F" X3 P* X: _ <statement sequence3>;% w- m1 m8 e: r/ J* l2 W
end;
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2循环语句/ @9 t9 R* K; J/ c1 n6 V
(1) from <statement sequence1>5 o( C8 ]" I2 k. w9 a
until <condition> loop
% Y. }' a7 b- [. b9 {* j <statement sequence2>;
- \/ F5 H/ J+ L- t& ~ D end;# f5 {8 k% v& s
(2) while <condition> loop
g% @. W3 q/ a; U <statement sequence1>;, k o8 e& O( o$ W% s
end;
3 W4 Y/ m, o; w X (3) repeat $ O4 T) _$ T8 p, b* F4 I
<statement sequence1>;( R. a$ M7 v3 k$ b
until <condition>;
4 D5 K3 Y9 l, H (4) for <condition> to <condition> loop
4 E! D: |. ?9 N4 ?$ `, D: ^ <statement sequence1>;
! O- A4 K1 Y: F0 A1 U# X+ N* s next;/ |+ B7 Y, R6 J( I7 M7 x
3中断语句
5 x/ F- K" l1 I6 l waituntil <condition> prio <integer expression>;2 I8 U2 u; G- U3 N
/ B( ~7 j! i- P- k% L
/ B- @8 |* a# h" ]( E. V% x以上为常用的函数！
1 V+ }4 J. |) U/ c4 o还有很多，如有需要我把资料发到你邮箱里 + T- A2 q. v" V" `* S/ R- k' t
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