Create a program that reads a list of “word” phone
numbers from a file and converts them to all digit phone numbers, and prints the
results to another file. There is no limit to the size of the input file.
Sample Input: (TELNUM.TXT)
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Sample Output: (TELNUM.OUT)
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The program should read input from TELNUM.TXT
and produce output to the screen, and to TELNUM.OUT.
Each number will be on a separate line in the input file.
Use functional decomposition and modular programming techniques to divide the
problem into appropriate functions. NO GLOBAL variables are allowed.
Following the guidelines discussed in class, construct a test set for
the program.