#include <stdio.h>

int main(int argc, char **argv)
{
#ifndef BS
#define BS  512
#endif
	FILE     	*i;
	FILE        *o;
	char        buffer[BS];
	size_t      n;

    fprintf(stderr,"Copy %s %s usign fread/fwrite\n", argv[1], argv[2]);

	if ( NULL == ( o = fopen( argv[2], "wb")))
	{
		perror("fopen");
		return 1;
	}

	if ( NULL == ( i = fopen( argv[1], "rb")))
	{
		perror("fopen");
		fclose(o);
		return 1;
	}

	while ( 0 != ( n = fread( buffer, 1, BS, i )))
		fwrite( buffer, 1, n, o );


	if (!feof(i))
		perror("fread");

	fclose(i);
	fclose(o);
}