Write a program that merges the integer numbers in two sorte

Write a program that merges the integer numbers in two sorted files and writes all the numbers in two a third file. Your program should prompt the user for the names of the two input files and the name of the output file. After the program is run, the output file will contain all the numbers in the two input files in one longer list in sorted order from smallest to largest. Your program should define a function that is called with two input file streams and the output file stream as three arguments. Sample Input/Output: Enter name for input fit-1: inputl.txt Enter name for input file-2: input2. Txt Enter name of output file: resuft.txt Your program should work for files of any length. Make sure to dose your files. Make sure to use meaningful variable names and proper line spacing and indentation. Include as comments in your program your name and a brief description of the program. Turn in a printout of your source code. Upload a copy of your source code to Sakai (Assignments: Program-4). Name your source file prog4.cpp

// C++ code merge two files

#include <fstream> // file processing
#include <iostream> // cin and cout
#include <cctype> // toupper
#include <iomanip> // setw
#include <cstring> // cstring functions strlen, strcmp, strcpy stored in string.h
#include <string.h> // string class
#include <stdlib.h>
#include <vector>
using namespace std;

void merge(std::istream& file1,std::istream& file2, std::ostream& fout)
{
   std::vector<int> v1;
   std::vector<int> v2;
   int d1;
   int d2;

while (!file1.eof())
{

       file1 >> d1;
       v1.push_back(d1);
   }

while (!file2.eof())
{

       file2 >> d2;
       v2.push_back(d2);
   }

   int i = 0, j = 0;
   while(i < v1.size() && j < v2.size())
   {
        if(v1[i] < v2[j])
        {
            fout << v1[i] << endl;
            i++;
        }
        else
        {
            fout << v2[j] << endl;
            j++;
        }
   }

while (i < v1.size())
{

fout << v1[i] << endl;
i++;

}

while (j < v2.size())
{

fout << v2[j] << endl;
j++;

}

int main()
{
string fname1,fname2,fname3;

   cout<<\"Enter name for input file-1: \";
   cin >> fname1;
   cout<<\"Enter name for input file-2: \";
   cin >> fname2;
   cout<<\"Enter name of output file: \";
   cin >> fname3;

   std::ifstream file1(fname1.c_str());
   std::ifstream file2(fname2.c_str());
   std::ofstream fout(fname3.c_str());

   if (!file1.good() || !file2.good() || !fout.good())
   {
   std::cout << \"Error opening file(s)\" << std::endl;
   return 0;
   }

merge(file1,file2,fout);

   file1.close();
   file2.close();
   fout.close();

return 0;
}

/*
output:
Enter name for input file-1: input1.txt
Enter name for input file-2: input2.txt
Enter name of output file: output.txt

input1.txt
2
6
10
12
17

input2.txt
4
8
9
15

output.txt
2
4
6
8
9
10
12
15
17