4

#include <stdio.h>
#include <stdlib.h>
#define MAXLIN 80

int main (void) {
    FILE *du, *di;
    char linija[MAXLIN];

    du = fopen ("stara.txt", "r");
    di = fopen ("nova", "w");

    while ( fgets(linija, MAXLIN, du) != NULL ) {
        fputs(linija, di);
    }

    fclose(du);
    fclose(di);

    return 0;
}