Use your knowledge of regular expressions in C++ to
solve the following problem:

1. Design and write a C++ program that reads a file that
   contains a name on each line. For each line of input
   there must be a line of output that either contains
   the name in a different format, or a message saying
   that the line contained bad input.

2. Each line of the input file is valid if it contains
   a name in one of the following formats:
   Harry S. Truman
   Harry Truman
   That is, a single middle initial with a trailing period
   is optional. If the middle initial is present, however,
   the period must also be present. Also, there must be
   nothing before or after the name on its line, and each
   name (first and last begins with a capital and contains
   nothing but lowercase letters from then on.

3. The required output format for a valid name is either
   Truman, Harry
   or
   Truman, Harry S.
   depending on the input. If the line does not contain
   a valid name, the message "Bad input line: " followed
   by the line's contents enclosed in double quotes is
   output.

Put your program in a file called FlipNames.cpp and when
it is working, copy the source and the executable, which
must be called FlipNames.exe, to your K: drive.