Keil C problem

Hi all.
I am facing this problem.
If I am using following syntax, logically it is ok, but it is generating a wrong asm code via keil C51.
Problem 1

ACC = ACC + B;
This statement works fine with C.
Now I thought it will generate

ADD A, B;
but it is generating

MOV A, B;
ADD A, B;

Problem 2
this C code also involving ACC without my wish.

ACC = z;
B = 0;
if(ACC<100)
...
this is generating following asm code

MOV A, z(0X0A)
CLR A;
MOV B, A;
this is not what i want.
if I interchange the first 2 lines it works OK. Why so?

Problem 3
I want the DA A command to take place in my code after the addition what I will have to do?
As I want to convert the result in decimal and form that I want to show it on LCD. (DEC to ASCII is quite simple)
I tried lot of C code variations which show correct result as far as only C is concerned but they arte generating absurd AS code and nothing is working.
Please suggest something.

Try writing your code in in-line assembly.

Yes. Thanks Kinjal. You are surely there to help all of us again.
I found that there is only way to do it.
Thanks again.

8052.com

try posting at 8052.com also.