//--------------------------------------
//file-reverse,	max	1000000
//2000/10/05(木)
//	2000 Copyright charlie, 
//	All rights reserved
//	http://www.geocities.co.jp/SiliconValley-Bay/6716/
// 	happypoint@geocities.co.jp
//
//reverse.txt書式
//infile
//outfile(****.txt)


#include <iostream.h>
#include <fstream>
#include <stdio.h>
#include <string.h>
#include <cstdlib>

const int maxnamelen=257;
FILE *infile, *outfile;
char infname[maxnamelen];
char outfname0[maxnamelen];
char outfname[maxnamelen];
char dummy[maxnamelen];

const char initialfile[]= "reverse.txt";
const char kakutyoushi[]= "txt";

const long maxcount=1000000;//定数でないとだめ


//....................................

void header()

{
	cout<<"program sourse:"<< __FILE__<<endl;

	cout << "compile date:"<<__DATE__
	<<","<<__TIME__<<"\n"<<endl;

//	if ( __STDC__ ==0 ) cout << "no-";

//	cout << "ANSI\n"<<endl;



}


/****** file open ****************/

void getinfname()
{
	printf("input file:");
	scanf("%s",infname);
}

void getoutfname()
{
	sprintf(outfname,"%s.%s",outfname0,kakutyoushi);
	printf("output file:%s\n",outfname );
}


void getfname()
{
	getinfname();
	getoutfname();
}


/*.................................
*/

void initial()
{
	char ch;
	ifstream in(initialfile);
	in.get( dummy , maxnamelen, '\n' );
	sscanf(dummy,"%s",infname);
	in.get( ch );
	in.get( dummy , maxnamelen, '\n' );
	sscanf(dummy,"%s",outfname0);

  	cout<<"input:"<<infname<<":"<<endl
		<<"output:"<<outfname0<<":"<<endl;
}

/*.................................
*/

void sub(ifstream &from )
{
	long count;
	char ch;
	char buffer[maxcount];

	cout<<"start."<<endl;
		getoutfname();
		ofstream to(outfname,ios::binary);
		if(!to)
			{
				printf("can't open %s." ,outfname);
				return;
			}

		count=0;
		while ( from.get(ch) && count < maxcount)
			{
				buffer[count]=ch;
				count++;
			}

		printf("maxcount:%d\nlenth:%d.\n",maxcount,count);
		while ( --count >= 0)
			{
				to.put(buffer[count]);
				
			}
}

/*...................................
*/

main( ) 
{
	header();
	initial();


	ifstream from(infname,ios::binary);
	if ( from )
		sub( from );
	else printf("can't open." );
}