building an assembler in C++

[Lolita]

hello
i'm trying to build an assembler for an SIC machine.
I wrote all my functions including pass1 and pass2 .
the user is supposed to write in a file the source code then the program can convert it into object code.
now my problem is that there r no errors but the program is not working and i do not see where the problem is..can u please help?
the program is written in c++ using visual c++.
i will attach the program so u can see my code
plz answer me as soon a possible
thank u in advance