1. Write a C++ program that compares two text files and
prints the lines where they first differ. The program
reads one line each from two files until a differing
line is found or one of the files is exhausted, in
which case the line read from the other file is the
first differing line. If both files are exhausted
simultaneously and no differing line has been found,
the two files are identical.
The program must take into account that two files may
be the same in the text, but only the number of spaces
or blanks on a line are different. Therefore, each
line must be squeezed to eliminate blanks or spaces
before they are compared. This method will give a true
comparison of two files.