[ 本帖最后由 cosdos 于 2011-6-19 00:10 编辑 ]

学习！求完整解答！求真相！

Linux下面有system函数，试用方法与WIndows一致，只是参数不一致。。

thanks

#include<stdio.h>
 int copy_file(char *old_filename, char  *new_filename)
 {
  FILE  *ptr_old, *ptr_new;
  errno_t err = 0, err1 = 0;
  int  a;
  err = fopen_s(&ptr_old, old_filename, "rb");
  err1 = fopen_s(&ptr_new, new_filename, "wb");
  if(err != 0)
   return  -1;
  if(err1 != 0)
  {
   fclose(ptr_old);
   return  -1;
  }
  while(1)
  {
   a  =  fgetc(ptr_old);
   if(!feof(ptr_old))
    fputc(a, ptr_new);
   else
    break;
  }
  fclose(ptr_new);
  fclose(ptr_old);
  return  0;
 }
 int  main(void)
 {
  char  filename_src[101], filename_dest[101];
  printf("\nSource file: ");
  gets_s(filename_src, 100);
  printf("\nDestination filename: ");
  gets_s(filename_dest, 100);
  if(copy_file(filename_src, filename_dest) == 0)
   printf("Copy Successful\n");
  else
   fprintf(stderr, "Error during copy!");
 }