ifstream inFile1,inFile2;
char InputFileName1[] = "D:/myfile1.txt";
char InputFileName2[] = "D:/myfile2.txt";
inFile1.open(InputFileName1);
inFile2.open(InputFileName2);

if(!inFile1 && !inFile2)
{
    cout<<"File not existing in system";
    exit(1);
}
string str,str2;

while(!inFile1.eof())
{
getline(inFile1,str);
    while(!inFile2.eof())
    {

        getline(inFile2,str2);

        if(str == str2)
        {
            cout << "Matched Number is " << str2 << endl;
        }
        else
        {
            cout<< "Sorry Number not found"<< endl;
        }
    }
}
inFile1.close();
inFile2.close();