Explanation: The above program is a combination of the previous two programs. The out
is an object of the ofstream class, and it is linked with the output file text. The
data entered by the user is written in the file text. The close() function closes the file
associated with the object out. Again, the same file is opened by the in object of class
ifstream for reading purpose. The data recently written are read and displayed on the
screen. Thus, in a program, both write and read operations are performed. The use of func-
tion close() is essential for changing the mode
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