Question

I’m trying to create a program that will concatenate (add two lists of integers together)
each list is stored as a text file. I want the C++ program to open list1.txt and list2.txt

I can’t actually get it to work though. I’ve put two lists of integers names list1 and list2 respectively however I’m getting the output cannot find list1.

#include <iostream>
#include <fstream>
#include <ostream>

using namespace std;

int main()
{
   ifstream findlist1("list1.txt", ios::in | ios::binary);
   if(!findlist1)
   {
      cout << "Cannot find list 1.\n";
      return 1;
   }
   ifstream findlist2("list2.txt", ios::in | ios::binary);
   if(!findlist2)
   {
      cout << "Cannot find list 2.\n";
      return 1;
   }
   ofstream out("list3out.txt", ios::out | ios::binary);

   if(!out)
   {
      cout << "Unable to output file ";
      return 1;
   }

   out << in1.rdbuf();
   out << " " << flush;
   out << in2.rdbuf();

   return 0;
}

EDIT = SOLUTION:

My files were called test1.txt and were therefore showing up to the program as test1.txt.txt

Answer 1

The code looks fine, you may try using absolute path or put the files in the same directory of executable