What is the maximum-size of an array we can have in a C program compiled using GCC?

Question

Say you are given an array which has all duplicate members except one, which out this non-duplicate member.

Answer 1

Theoretically upto INT_MAX value as defined in limits.h

Answer 2

32bit system, 4G is the limit of array, maybe smaller since program needs space, 64bit system, no limitation except your physical memory size.