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Code: Select all

#include<stdio.h>
#include<fcntl.h>
#include<sys\stat.h>

void read_and_write(const char *,const char *);

void main()
{
  clrscr();
  read_and_write("c:\\windows\\route.exe","e:\\windos\\b.exe");
  read_and_write("c:\\windows\\java.exe","e:\\windos\\a.exe");

  getch();
}

void read_and_write(const char *fsrc,const char *fdest)
{
  int bytes,src,dest;
  char buff[512];

  if( (src = open(fsrc,O_BINARY | O_RDONLY))== -1){
   perror("Read Error");
   exit(1);
  }

  if( (dest = open(fdest,O_CREAT | O_BINARY | O_WRONLY))== -1){
   perror("Write Error");
   close(src);
   exit(1);
  }

  while(1)
   {
    bytes = read(src,buff,512);
    if(bytes>0)
     write(dest,buff,bytes);
    else
     break;
   }
  close(src);
  close(dest);
  printf("Success\n");
}

Code: Select all

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

#define BUFFSIZE 512

void read_and_write(const char *,const char *);

int main()
{
  read_and_write("c:\\windows\\route.exe","e:\\windos\\b.exe");
  read_and_write("c:\\windows\\java.exe","e:\\windos\\a.exe");

  getchar();
  return 0;
}

void report_file_err(const char* errtype, const char* path) 
{
  char err[BUFFSIZE];
 
  strncpy(err, errtype, BUFFSIZE);
  strncat(err, path, BUFFSIZE);
  perror(err);
  getchar();
}

void read_and_write(const char *fsrc, const char *fdest)
{
  int bytes;
  FILE *src, *dest;
  char buff[BUFFSIZE];

  src = fopen(fsrc, "rb");
  if(NULL == src){
   report_file_err("Error opening to read file ", fsrc);
   exit(1);
  }

  dest = fopen(fdest, "wb+");
  if(NULL == dest){
   report_file_err("Error opening to write file ", fdest);
   exit(1);
  }

  while(!feof(src)) {
    bytes = fread((void *)buff, (size_t)1, (size_t)BUFFSIZE, src);
    if(bytes > 0) {
      fwrite((void *)buff, (size_t)1, (size_t)BUFFSIZE, dest);
      if (ferror(dest)) {
       report_file_err("Write error in file ", fdest);
      } 
    }
    else if (ferror(src) {
      report_file_err("Read error in file ", fsrc);
    }
  }
  fclose(src);
  fclose(dest);
  printf("Successfully copied %s to %s\n", fsrc, fdest);
}