Output of A code with explanation

Question

What is the output of this program?
#include < stdio.h >
using namespace std;
int main(){
int array[] = {10, 20, 30};
cout << -2[array];
return 0;}
a)-20 b)-30 c) garbage value

Answer 1

-2[array]
=-array[2]
=-30

Answer 2

welcome brother#)
just to ensure...
a genral approach..

n[array_name]
= (sign of n)array_name[ |n| ]

Answer 3

thanksss alottttt