Customer and Pensioner. Pensioner should be a subclass of Customer. These classes should be in their own files with separate header files. Details are below.
Create a third class called Manager. The manager file can contain the main function. The Manager class should contain member functions that read a text file, called telephone.dat, line by line, performing appropriate actions at each line, until the end of the file is reached. You should make no assumptions about the length of the file.
Each line of the file has the following format:
A Jimbo Jones 43215678 56
A Gladys Skinner 7628372 56 P P23435