What will be the output of the following C++ code?

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