Question

In c++ please.

Write a program that reads the contents of two text files and compares them in the following ways:

It should display a list of all the unique words contained in both files.

It should display a list of the words that appears in both files.

It should display a list of the words that appears in the first file, but not the second.

It should display a list of the words that appears in the second file, but not the first.

It should display a list of the words that appears in either the first or second file, but not both.

Answer 1

C++ Code:

#include <bits/stdc++.h>
using namespace std;

//map for two files.
map<string,int>set1;
map<string,int>set2;

// driver code
int main()
{
   // filestream variable file
   fstream file1,file2;
   string word, t, q, filename,filename2;

   // filename of the file
   filename = "paragraph.txt";
   filename2= "paragraph2.txt";

   // opening file
   file1.open(filename.c_str());
   file2.open(filename2.c_str());

   // extracting words from the file
   while (file1 >> word)

       set1.insert({word,1});

   }

cout<<"Unique Word of text file 1:\n\n";
   while (file2 >> word)
   {

        set2.insert({word,1});
   }

   //print unique word of file1.

   for(auto i=set1.begin();i!=set1.end();i++)
    {
      cout<<i->first<<" ";                 //print the words.
    }
cout<<"\n\n\nUnique Word of text file 2:\n\n";
   //print unique word of file2.
    for(auto i=set2.begin();i!=set2.end();i++)
    {
      cout<<i->first<<" ";                 //print the words.
    }

cout<<"\n\n\n Words that appears in both files:\n\n";
    for(auto i=set1.begin();i!=set1.end();i++)
    {

        if(set2[i->first]==1)
            cout<<i->first<<" ";
    }

cout<<"\n\n\n words that appears in the first file, but not the second:\n\n";
    for(auto i=set1.begin();i!=set1.end();i++)
    {

        if(set2[i->first]==0)
            cout<<i->first<<" ";
    }

cout<<"\n\n\n words that appears in the second file, but not the first:\n\n";
    for(auto i=set2.begin();i!=set2.end();i++)
    {

        if(set1[i->first]==0)
            cout<<i->first<<" ";
    }

cout<<"\n\n\n words that appears in either the first or second file, but not both:\n\n";
    for(auto i=set1.begin();i!=set1.end();i++)
    {

        if(set2[i->first]==0)
            cout<<i->first<<" ";
    }
    for(auto i=set2.begin();i!=set2.end();i++)
    {

        if(set1[i->first]==0)
            cout<<i->first<<" ";
    }
   return 0;
}

Output: