Hey friends !Please explain me this code and say why its output is 36?

Question

#include <iostream>
using namespace std;

int main() {
int const N =4;
int x[N]={1,1,1,1};

cout<<x[N];

return 0;

}
// outputs 36 but why if I write N=3,then output will be 3 why buddy ?

Answer 1

it intializes an array of size N
However the indices start from 0 and go to N-1
So x[N] actually accesses the memory just after the array, which is some garbage value.

But I also don't know why it always shows the same garbage values :/

Answer 2

Array indexes start from zero (0, 1, 2...) the array is 4 ints big which means 3 is the highest one. C and C++ dont check if the array index is out of range and gives you a value in memory after the array (random value basically).