#include <locale.h>
#include <stdio.h>
#include <wchar.h>
#include <windows.h>
#include <utf8proc.h>

void kopiuj(char *skad, char *dokad);
void main()
{
    kopiuj("nowy1.txt","nowy2.txt");
}
void kopiuj(char *skad, char *dokad)
{
    FILE *fr,*fw;
    char c;int i=-1;
    if((fr = fopen(skad, "r"))==NULL)printf("Blad otwarcia.");
    if((fw = fopen(dokad, "w"))==NULL)printf("Blad zapisu.");
    fseek(fr,i,SEEK_END);
    while(1){
        c=fgetc(fr);
        i--;
        fseek(fr,i,SEEK_END);
        fputc(c,fw);
        printf("%d\n",ftell(fr));Sleep(100);
    }
    fseek(fr,0,SEEK_SET);
    c=fgetc(fr);
    fputc(c,fw);
    fclose(fr);fclose(fw);
}