#include <stdio.h>

int main(){
	FILE *fp=NULL;
	FILE *fpout=NULL;
	char c;

	fp = fopen("tekst.txt", "r");
	fpout = fopen("kopirani_tekst.txt", "w");
	if(fp == NULL || fpout==NULL){
		printf("-1\n");
		return 1;
	}

	while((c=fgetc(fp))!=EOF){
		putchar(c); //ekv. sa fputc(c, stdout);
		fputc(c, fpout);
	}

	fclose(fp);
	fclose(fpout);
	return 0;
}