Question

Hi!

I am trying to compare 2 files, and figure out which lines from infile2 are also in infile1, and output the line index, from infile2, of common lines. I would also want to see which lines (actual string line) are common.

Below is my c++ program, and I am not sure what I am doing wrong. Can someone tell me what I am doing wrong and how it can be fixed?

_________________________________________________________main.cpp

#include<iostream>

#include<fstream>

#include<vector>

#include<string>

using namespace std;

int main(int argc, char *argv[]){

string myString1, myString2;

vector<string> string1, string2;

int i = 0;

int y = 0;

ifstream infile1("LeftShift2.txt");

ifstream infile2("LeftShift3.txt");

if(infile1.is_open() && infile2.is_open())

{

while(!infile1.eof() && !infile2.eof())

{

getline(infile1, myString1);

string1.push_back(myString1);

getline(infile2, myString2);

string2.push_back(myString2);

if(string1.at(i) != string2.at(y))

{

y++;

}

else if(string1.at(i) == string2.at(y))

{

i++;

}

}

cout<<"common line is at: " << y << endl;

cout<<"The common lines are: "<< string2.at(y) << endl;

}

infile1.close();

infile2.close();

return 0;

}

__________________________________________LeftShift2.txt

Adios amiga mia
Bella ciao
Si le monde etait aussi petit
On ne serait pas aussi grandiose
Pays du lait et du miel
Alors, on danse?!

-------------------------------------------------------------LeftShift3.txt

Pays du froid et des montagnes
Burundi
Pays du lait et du miel
Adios amiga mia

-------------------------------------------------------------Output (assume count line start at 0)

common line is at: 2
The common lines are: Pays du lait et du miel

common line is at: 3
The common lines are: Adios amiga mia

Answer 1

If you have any doubts, please give me comment....

#include <iostream>

#include <fstream>

#include <vector>

#include <string>

using namespace std;

int main(int argc, char *argv[])

{

    string myString1, myString2;

    vector<string> string1;

    int i = 0;

    int y = 0;

    ifstream infile1("LeftShift2.txt");

    ifstream infile2("LeftShift3.txt");

    if (infile1.is_open() && infile2.is_open())

    {

        while (!infile1.eof())

        {

            getline(infile1, myString1);

            string1.push_back(myString1);

        }

        int i=0;

        while(!infile2.eof()){

            getline(infile2, myString2);

            for(int j=0; j<string1.size(); j++){

                if(myString2.compare(string1.at(j))==0){

                    cout << "common line is at: " << i << endl;

                    cout << "The common lines are: " << myString2 << endl;

                }

            }

            i++;

        }

    }

    infile1.close();

    infile2.close();

    return 0;

}