Hi Michael, I think the '...' is called an ellipsis in the array initializer. So you can do something like: int array[10] = { [4] = 9, [1 ... 2] = 88, [7 ... 9] = 1 }; It's valid C99 code. IIRC, it's *NOT* valid C90 or C++98 code. (I'm not sure if GCC provides convenience extensions that you may have to disable in a C90 or C++98 environment.) You may find this output of interest: gcc -S test.c cat test.s HTH, --Eljay