Write in C++

Write a function that, given a string as input, capitalizes any repeated letters and returns a new string consisting of only these repeats.

Read the words (strings) from a file of the users choice in main() and write the new strings (the capitalized repeated letters) to another file of the users choice.

You have a few choice in implementation:

Use of either old style c-strings (character arrays) or the string (#include ) class.

Use of a data structure (array or vector) to store the strings. You can store the strings in such a container, or you can just read and write them without using storage.

Sample run:

Please provide the input file name: wordsin.txt

Please provide the output file name: wordsout.txt

The original text is: Rerunning programs countless times is really ridiculous.

The repeat text is: REUNIGOAMSCTL

Content has been written to the file wordsout.txt.