This program numbers the lines found in a text file. Write a program that

reads text from a file and outputs each line to the screen and to another

file preceded by a line number. Print the line number at the start of the

line and right-adjusted in a field of three spaces. Follow the line number

with a colon, then one space, then the text of the line. You should get a

character at a time, and write code to ignore leading blanks on each line.

You may assume that the lines are short enough to fit within a line on the

screen. Otherwise, allow default printer or screen output behavior if the

line is too long (that is, wrap or truncate).

A somewhat harder version determines the number of spaces needed in

the field for the line numbers by counting lines before processing the

lines of the file. This version of the program should insert a new line after

the last complete word that will fit within a 72-character line.