Chapter 6, Problem 5PP

Write a program that will correct a C++ program that has errors in which operator, << or >>, it uses with cin and cout. The program replaces each (incorrect) occurrence of

cin <<

with the corrected version

cin >>

and each (incorrect) occurrence of

cout >>

with the corrected version

cout <<

For an easier version, assume that there is always exactly one blank space between any occurrence of cin and a following <<, and similarly assume that there is always exactly one blank space between each occurrence of cout and a following >>.

For a harder version, allow for the possibility that there may be any number of blanks, even zero blanks, between cin and << and between cout and >>. In this harder case, the replacement corrected version has only one blank between the cin or cout and the following operator. The program to be corrected is in one file and the corrected version is output to a second file. Your program should define a function that is called with the input- and output-file streams as arguments.

If this is being done as a class assignment, obtain the file names from your instructor and ask your instructor whether you should do the easier version or the harder version.

(Hint: Even if you are doing the harder version, you will probably find it easier and quicker to first do the easier version and then modify your program so that it performs the harder task.)