What is the output of this program

    #include stdio.h 
    #include ctype.h
    int main ()
    {
        int i = 0;
        char str[] = "G";
        while (str[i])
        {
            if (isalpha(str[i])) 
                printf ("alphabetic");
            else 
                printf ("not alphabetic");
            i++;
        }
        return 0;
    }