Return 1 if ptr points to an element within the specified intArray, 0 otherwise. * Pointing anywhere in the array is fair game, ptr does not have to
* point to the beginning of an element. Check the spec for examples if you are
* confused about what this method is determining.
* size is the size of intArray in number of ints. Can assume size != 0.
* Operators / and % and loops are NOT allowed.
** ALLOWED:
* Pointer operators: *, &
* Binary integer operators: -, +, *, <<, >>, ==, ^
* Unary integer operators: !, ~
* Shorthand operators based on the above: ex. <<=, *=, ++, --, etc.
** DISALLOWED:
* Pointer operators: [] (Array Indexing Operator)
* Binary integer operators: &, &&, |, ||, <, >, !=, /, %
* Unary integer operators: -
*/
int withinArray(int * intArray, int size, int * ptr) {