FILE *fptr;
    if ((fptr = fopen("program.txt", "r")) == NULL) {
        printf("Error! opening file");
        // Program exits if file pointer returns NULL.
        exit(1);
    }

    vector<BYTE> vect;

    unsigned int duzina;
    fscanf(fptr, "%u", duzina);
    printf("Data from the file:%u\n", duzina);

    char c;
    for(unsigned int i=0; i < duzina; ++i)
    {
        fscanf(fptr, "%c", c);
        vect.push_back(c);
    }

    fclose(fptr);