Why this code outputs 1 ?

Question

#include <iostream>
using namespace std;

int main() {

int n = 0 ;

int a[] = {3, 4} ;

n++ ;

a [n] = n ;

cout << a[1] ;

return 0;
}

Answer 1

because a[n] = n means a[1] = 1

Answer 2

You are setting the object gotten in the a[n] index the " n " value that after "n++" becomes 1.
So the machine understand this : a[1] = 1
Finally you print out " a[1] " that after the setting is 1