13. odd even checking

1 = 0001               2 = 0010

3 = 0011               4 = 0100

5 = 0101               6 = 0110

7 = 0111               8 = 1000

For odd number n&1 will be    = 1

And even number n&1 will be = 0

Code :

#include<bits/stdc++.h> using namespace std; int main() {     int t,n,i,f;     cin>>t;     while(t--)     {         cin>>n; // n<= 10^10                if((n&1) == 1)             cout<<"odd\n";         else             cout<<"even\n";     } }