I need to create a C++ programming that can do the following question:

Input/Output Conditions

Corpus cleaner

Please create a program called sol_cleaner.ext, where ext denotes the file extension corresponding to your choice of programming language (.py, .c, .cpp, .c++, or .java). This program should open and read in a file named corpus.txt. This file should be a large body of work written in English (such as one of the books freely downloadable from Project Gutenberg). As output, the program should produce a new file called corpus_clean.txt which is similar to the input, except that:

All characters that are not spaces or alphabetical characters have been filtered out.

All alphabetical characters have been capitalized.