unsigned long long int with os-x

[Nicholas Strauss]

Hi,

I'm trying to use gcc in darwin os-x. I've written the following piece 
of code:

int main(int argc, char *argv[])
{
   unsigned long long int   u;

   u = 1<<63;
   printf("u: %ld uu: %ld\n", u, u-1);
   printf("maxint %ld\n", INT64_MAX);
}

What compiler/linker options should I use with gcc?
What format should I use with printf?

Nick
infinity software
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