Question

OK, I am trying to get a sub array from an existing array and I’m just not sure how to do it. In my example I have a very large array, but I want to create an array from the last 5 elements of the array.

An example of what I am talking about would be:

int array1 = {1,2,3,...99,100};
int array2[5] = array1+95;

I know this isn’t correct, but I am having some trouble getting it right. I want to get the elements 96 through 100 in array1 and put them into array2 but I don’t want to copy the arrays. I just want array2 to start at the 96 element such that array1[96] and array2[0] would be pointing to the same location.

Answer 1

for this:

"such that array1[96] and array2[0] would be pointing to the same location."

you can do:

int *arr2 = arr1 + 96;
assert(arr2[0] == arr1[96] == 97);