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Sorry if this is a FAQ but...

I am working with long long variables and I have the following two problems:

1) what is the format of a printf statement that will print a long long 
   variable in hexadecimal format. I've tried everything I can think of
   or find in any documentation and nothing seems to work. The best I 
   can seem to do is to print the upper half of the long long.


2) How can I assign a long long to a constant. I have tried the following
   two approaches

A)  main 
   {
    long long Foo;

    Foo = 0x0123456789ABCDEF;

  };

   when I compile using the gcc -Wall -O -ansi Foo.c, it returns a 
   constant out of range error.

b) main
   {

   long long Foo;
   
   Foo = 0x01234567;
   Foo = Foo<<32;
   Foo = Foo | 0x89ABCDEF;
   };

This seems to work fine until I want to put this shift-or stuff into a 
function like this:

  long long AssignALongLong(temp1, temp2)
  long temp1, temp2;
  {
  long long temp3;

   temp3 = temp1;
   temp3 = temp3<<32;
   temp3 = temp3 | temp2;
  };

When I call AssignALongLong like this:
  
  ...
  Foo = AssignALongLong(0x01234567,0x89ABCDEF);
  ...


The problem is that it seems Foo equals 0xFFFFFFFF89ABCDEF after this 
function call.

Any help will be greatly appreciated.

Please send responses to doconnor@apple.com.

Thanks,
Dan O'Connor