I was working on this problem and I am too lost to complete them. Can you please help me$?//$ TODO: add a header#include

#include

#include

#include $//$ Read all the words from the given filename, and return them as a vector

$//$ of strings.

$//$ If the file cannot be opened, return an empty vector.

std::vector ReadWords$($const std::string& filename$)\{$

$//$ TODO: declare an empty vector

$//$ TODO: open a std::ifstream

$//$ TODO: write a loop that reads each word from the ifstream, and

$//$ uses push$\_$back to add each word to the vector

$//$ TODO: return the vector

$$ return std::vector$()$; $//$ TODO: replace this return statement with one that actually works

$\}//$ Return true if word is present in dictionary, or false otherwise.

$//$ dictionary is intended to be a vector containing all words from a words.txt

$//$ file.

$//$ word is intended to be a string from a document file, that may or may not

$//$ be spelled properly.

bool InDictionary$($const std::vector& dictionary,

$$ const std::string& word$)\{$

$//$ TODO: write a linear search loop that determines whether or not

$//$ word is present in dictionary.

$//$ TODO: return true if word is present, or false otherwise

$$ return false; $//$ TODO: replace this return statement with one that actually works

$\}//$ Return a vector containing all of the misspelled words in document.

$//$ dictionary is intended to be a vector containing all words from a words.txt

$//$ file.

$//$ document is intended to be a vector of all of the words from a document

$//$ file.

std::vector MisspelledWords$($

$$ const std::vector& dictionary,

$$ const std::vector& document$)\{$

$//$ TODO: declare an empty vector

$//$ TODO: write a loop that checks each word string in document;

$//$ calls InDictionary to determine whether the word is in dictionary;

$//$ and adds the word to your vector if it not found

$//$ TODO: return your vector

$$ return std::vector$()$; $//$ TODO: replace this return statement with one that actually works$\}$int main$($int argc, char$*$ argv$[])\{$

$$ std::vector arguments$($argv$,$ argv $+$ argc$)$;$//$ TODO: validate that one argument was provided.

$//$ If not, print

$//$ error: you must give a document filename

$//$ and return a non$-$zero exit code.$//$ TODO: store the first and only command line argument, which holds a

$//$ document filename, in a variable$//$ TODO: call ReadWords to read the contents of words.txt$,$ and store the

$//$ return value in a variable for the dictionary$//$ TODO: call ReadWords to read the contents of the document filename,

$//$ and store the return value in a variable for the document$//$ TODO: call MisspelledWords to find the list of all misspelled words, and

$//$ store the return value in a variable for the output$//$ TODO: print

$//$ spelling errors:

$//$ and then use a loop to print out each of the misspelled words$$ return $0$;

$\}$The file names are:$120.$txtfox.txtleota.txtlincoln.txtwords.txt$$Thank you.