Copying a File - C++ File Stream

C++ examples for File Stream:File Operation

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Description

Copying a File

Demo Code

#include <iostream>
#include <fstream>

const static int BUF_SIZE = 4096;

using std::ios_base;

int main(int argc, char** argv) {

   std::ifstream in(argv[1], ios_base::in | ios_base::binary);  // Use binary mode so we can
   std::ofstream out(argv[2], ios_base::out | ios_base::binary); // content.

   char buf[BUF_SIZE];

   do {/*from  w  w  w  .java  2  s.co m*/
      in.read(&buf[0], BUF_SIZE);      // Read at most n bytes into
      out.write(&buf[0], in.gcount()); // buf, then write the buf to
   } while (in.gcount() > 0);          // the output.

   in.close();
   out.close();
}

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