How to solve this problem using c++

4. [40 points] File ilo Write a complete program starting from #include. A file called input.txt contains words separated by spaces. We will assume everything is lowercase and there are no punctuations. Ask the user for a file name for an output file. Write to the output file the list of words occurring in the input.txt file and how many times each word occurred. Each word should only appear once in the list. Format the output so that the width of the first column is 10 and the width of the second column is 4. Sample output: aardvark 5 bruin 9 hello 2 You may write any functions and classes you wish. You may use any vectors or any algorithms from the algorithm library. Next two pages are left blank to give you plenty of room It is a good idea to pseudo code your idea here on this page. Even if you make some mistakes you can get partial credit if your pseudo code is reasonable