FILE* Usrs = fopen("Users.dat", "wb");
        StructForReg Array[100];
        StructForReg Perenos;
        int i = 0;
        while (!!(feof(Usrs) == 0))
        {
            fread(&Perenos, sizeof(StructForReg), 15, Usrs);
            Array[i] = Perenos;
            i += 1;
        }
        fclose(Usrs);
//here must be a code with clearing and rewriting