C++ Program to Merge Two Files Into Third File Using File Handling

belongs to collection: Examples of File Handling Programs in C++ Programming

ghaidaib

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2022-05-16

285

Hard

Explanation:-

So in this problem, we have to Merge the two file into an another new file. The program first will ask you to enter the first file name after that ask for entering the second file name than program merge the first file and the second file. We have to enter the both file name with extension cause file always have extension or folder not this is useful when you want to merge two files or in other words, we can say that merge two file. This is not copying one file into the another file in this we have to merge two separate file file1 and file2 into file3 or we can say that we are copying the file1 and file2 in the third file file3.

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ghaidaib

2022-05-16

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#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<stdio.h>
#include<stdlib.h>
using namespace std;
int main()
{
 ifstream ifiles1, ifiles2;
 ofstream ifilet;
 char ch, fname1[20], fname2[20], fname3[30];
 cout<<"Enter first file name (with extension like file1.txt) : ";
 gets(fname1);
 cout<<"Enter second file name (with extension like file2.txt) : ";
 gets(fname2);
 cout<<"Enter Third File name of file : ";
 gets(fname3);
 ifiles1.open(fname1);
 ifiles2.open(fname2);
 if(ifiles1==NULL || ifiles2==NULL)
 {
  perror("Error Message ");
  cout<<"Press any key to exit...\n";
  getch();
  exit(EXIT_FAILURE);
 }
 ifilet.open(fname3);
 if(!ifilet)
 {
  perror("Error Message ");
  cout<<"Press any key to exit...\n";
  getch();
  exit(EXIT_FAILURE);
 }
 while(ifiles1.eof()==0)
 {
  ifiles1>>ch;
  ifilet<<ch;
 }
 while(ifiles2.eof()==0)
 {
  ifiles2>>ch;
  ifilet<<ch;
 }
 cout<<"The two files were merged into "<<fname3<<" file successfully..!!";
 ifiles1.close();
 ifiles2.close();
 ifilet.close();
 getch();
}

Output:

Enter first file name (with extension like file1.txt): example.txt

Enter second file name (with extension like file2.txt): destination.txt

Enter third file name of file :merge.txt

the two files were merged into merge.txt file successfully!!!

Input: File1