C++ assignment

Assignment for c++ Write a program which will add digit strings. The input strings will be read Byte objects. The program will evaluate the sum of each byte pair. The program will write each input pair as well as the results to an output file according to the format specified below. The results will include meaningful messages about erroneous string input or addition overflow when applicable. The program will continue to read and evaluate strings until the end of the input file is reached. You will need to define Byte as a class Note i am already have the assignment just want enhancement that mean's a little bit of work