Short answer is yes, but with a lot of extra work.
Not knowing what your goal is, where your reading the data from or your experience level, not to mention which compiler your using its kind of difficult to suggest anything that might help.
Start with looking at the fopen() function, then hex edit an empty text file, then compare a text file with something in it, I imagine your wanting to output it to an lcd or screen etc, so you might want to create some sort of lookup table, but I would look at what your compilers library's are capable of first. Have a look around the web there are plenty of tutorials and forum discussions on this subject.
This is my first post here so if I'm not giving the usual level of help expected here please forgive me