各位老师，2.88版序列模式下列代码返回值
以下内容为程序代码:
1 A1:=0;
2 A2:=0;
3 A3:=0;
4 A4:=0;
5
6 D1:IF(B1=0 AND B2=0 AND B3＞0,E1,0);
7 D2:IF(B1=0 AND B2=0 AND B3=0,E2,0);
8 D3:IF(B1=0 AND B2=0 AND B3＜0,E3,0);
9 D4:IF(B1=0 AND B2=0 AND B3＜0,E4,0);
10
11 IF(B1=0 AND B2=0 AND B3＞0) THEN
12 BEGIN
13 A1:=0;
14 A2:=C1+C2;
15 A3:=C1-C2;
16 A4:=(C1+C2)/2;
17 END
18
19 IF(B1=0 AND B2=0 AND B3=0) THEN
20 BEGIN
21 A1:=C1+C2;
22 A2:=0;
23 A3:=(C1+C2)/2;
24 A4:=(C1-C2)*-1;
25 END
26
27 IF(B1=0 AND B2=0 AND B3＜0) THEN
28 BEGIN
29 A1:=(C1-C2)*-1;
30 A2:=C1+C2;
31 A3:=0;
32 A4:=(C1+C2)/2;
33 END
34
中A1－A4返回值不正确，但D1－D4返回值正确是什么原因造成的？如何解决？
把b1,b2,b3,b4,c1,c2,c3,c4的条件也给出来看看
[此贴子已经被作者于2012-6-4 11:04:02编辑过]
没有E1－E4
[此贴子已经被作者于2012-6-4 11:13:20编辑过]