Copy files (c)

• fopen
• fgets
• fwrite
• fclose

fileCopy.c

#include <stdio.h>
#include <string.h>

#define bufSize 1024

int main(int argc, char *argv[])
{
  FILE *ifp, *ofp;
  char buf[bufSize];
  if (argc != 3)
  {
    fprintf(stderr,
            "Usage: %s <soure-file> <target-file>\n", argv[0]);
    return 1;
  }
  if ((ifp = fopen(argv[1], "rb")) == NULL)
  { /* Open source file. */
    perror("fopen source-file");
    return 1;
  }
  if ((ofp = fopen(argv[2], "wb")) == NULL)
  { /* Open target file. */
    perror("fopen target-file");
    return 1;
  }
  while (fgets(buf, sizeof(buf), ifp) != NULL)
  { /* While we don't reach the end of source. */
    /* Read characters from source file to fill buffer. */
    /* Write characters read to target file. */
    fwrite(buf, sizeof(char), strlen(buf), ofp);
  }
  fclose(ifp);
  fclose(ofp);
  return 0;
}

This code was developed by me, G. Samaras.
Same code for C++.

#include <iostream> 
#include <fstream> 
#include <cstdlib> 

int main ( int argc, char *argv[] )
{
  if ( argc != 3 ) {
    std::cerr<<"Usage: %s <readfile1> <writefile2>\n";
    std::exit ( EXIT_FAILURE );
  }

  std::ifstream in ( argv[1] );

  if ( !in.is_open() ) {
    std::cerr<<"Error opening input file\n";
    std::exit ( EXIT_FAILURE );
  }

  std::ofstream out ( argv[2] );

  if ( !out.is_open() ) {
    std::cerr<<"Error opening output file\n";
    std::exit ( EXIT_FAILURE );
  }

  char ch;
  while ( in.get ( ch ) )
    out.put ( ch );
}

Have questions about this code? Comments? Did you find a bug? Let me know!
Page created by G. (George) Samaras (DIT)