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C++ Discussion Thread
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Nov 16th, 2007

C++ copy file

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I can make this program to copy diverse format wihout losts.

example:
C:\\animal.exe to D:\\animal.exe
(The File location write in locale)

c++ Syntax (Toggle Plain Text)
#include <iostream>
#include <fstream>
using namespace std;
int main ()
{
    char data[50];        
 
   char inputFile [100];      
    cout <<"Insert inputFilePatch :"<<endl; 
    cin >> inputFile;    
 
    ifstream inputFilePatch;           
    inputFilePatch.open(inputFile);
 
    if(!inputFilePatch) {   
    cout << "Wrong Location!!!\n";
     system("PAUSE");
    return 1;
    }	
    char outputFile[100];  
    cout<<"Insert outputFilePatch  "<<endl; 
    cin >> outputFile;
 
    ofstream outputFilePatch;
    outputFilePatch.open(outputFile);    
    outputFilePatch<<data; 
 
   while(inputFilePatch>>data){
        outputFilePatch<<data<< endl;
        }; 
 
    outputFilePatch.close();
 
    system("PAUSE");
   return 0; 
 
}
#include <iostream>
#include <fstream>
using namespace std;
int main ()
{
    char data[50];        
    
   char inputFile [100];      
    cout <<"Insert inputFilePatch :"<<endl; 
    cin >> inputFile;    
        
    ifstream inputFilePatch;           
    inputFilePatch.open(inputFile);
    
    if(!inputFilePatch) {   
    cout << "Wrong Location!!!\n";
     system("PAUSE");
    return 1;
    }	
    char outputFile[100];  
    cout<<"Insert outputFilePatch  "<<endl; 
    cin >> outputFile;
    
    ofstream outputFilePatch;
    outputFilePatch.open(outputFile);    
    outputFilePatch<<data; 
    
   while(inputFilePatch>>data){
        outputFilePatch<<data<< endl;
        }; 
        
    outputFilePatch.close();
   
    system("PAUSE");
   return 0; 
   
}

This is exactly just for .txt files!
What to change to work these?

Last edited by Ancient Dragon; Nov 16th, 2007 at 6:28 pm. Reason: replaced icode tags with code tags.

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ace_joker_bt

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Nov 16th, 2007

Re: C++ copy file

I really don't know what you mean, but you might want to open the files in binary mode...

twomers

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Posting Virtuoso

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Nov 16th, 2007

Re: C++ copy file

If you are trying to write that code for MS-Windows then you can use win32 api CopyFile() function. Otherwise open the input and output files in binary mode, not the default text mode. On *nix it doesn't matter because they are both the same, but on MS-Windows there is a difference.

Ancient Dragon

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Nov 16th, 2007

Re: C++ copy file

the easiest, least error-prone and the fastest way to copy an entire stream is this:
output_stream << input_stream.rdbuf() ;. if you are writing a utility like this, error messages are conventionally sent to cerr (not cout).

c++ Syntax (Toggle Plain Text)
#include <iostream>
#include <fstream>
using namespace std ;
 
int main( int argc, char** argv )
{
  if( argc != 3 ) 
  {
    cout << "usage: " << argv[0]  << "<srce file>  <dest file>" ;
    return 1 ;
  }
  ifstream srce( argv[1], ios::binary ) ;
  if( !srce )
  {
    cerr << "could not open " << argv[1] << " for reading\n" ;
    return 2 ;
  }
  ofstream dest( argv[2], ios::binary ) ;
  if( !dest )
  {
    cerr << "could not open " << argv[2] << " for writing\n" ;
    return 3 ;
  }
  dest << srce.rdbuf() ;
  if( !dest )
  {
    cerr << "error while copying\n" ;
    return 4 ;
  }
}
#include <iostream>
#include <fstream>
using namespace std ;

int main( int argc, char** argv )
{
  if( argc != 3 ) 
  {
    cout << "usage: " << argv[0]  << "<srce file>  <dest file>" ;
    return 1 ;
  }
  ifstream srce( argv[1], ios::binary ) ;
  if( !srce )
  {
    cerr << "could not open " << argv[1] << " for reading\n" ;
    return 2 ;
  }
  ofstream dest( argv[2], ios::binary ) ;
  if( !dest )
  {
    cerr << "could not open " << argv[2] << " for writing\n" ;
    return 3 ;
  }
  dest << srce.rdbuf() ;
  if( !dest )
  {
    cerr << "error while copying\n" ;
    return 4 ;
  }
}

vijayan121

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Nov 17th, 2007

Re: C++ copy file

Thanks for your help!!!

ace_joker_bt

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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

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