/*
 * GNU patch can handle \r or \r\n line ending. It just cannot handle mixed case.
 * Convert ending to \r or \r\n 
*/
#define _CRT_SECURE_NO_DEPRECATE
#include <stdio.h>
#include <stdlib.h>


//buffer sizse, also the maximum charactor per line
#define BUFSIZE (4*1024*1024)

int main(int argc, char** argv)
{
    char *buf; 
    int  usedSize = 0;

    buf = (char*)malloc(BUFSIZE);
    while ( fgets(buf, BUFSIZE, stdin) != 0)
    {
        int len = strlen(buf);
        len --;
        while (len >= 0)
        {
            //scan string in reverse direction
            //remove any '\r' or '\n' from file
            if (buf[len] == '\r' || buf[len] == '\n')
            {
                buf[len] = 0;
            }
            else
            {
                break;
            }
            len --;
        }
        //let C lib generate a line ending
        puts(buf);
    }

    free(buf);
}