I need help with C in UNIX!!!

I have a program written in C that lets you choose which page of a text file you want to print. The thing is that it is taken from a different UNIX system, however I did make a copy of the libc.a from the original system but I didn't replace it( just saved it to a directory in which the program is kept). The problem is when I run the program there are error messages shown and it said that it couldn't load libc.a and it couldn't load the module and I dont know what could be causing that. So any help or advice would be greatly appreciated. You can e-mail me at [email protected] , Thank You.