In C++, for output, we usually write cout<<x;

But if we want to write in reverse-> x>>cout;

Same case for cin. Instead of cin>>x, if we want to write x>>cin.

We can do it in class. ```c++

include<bits/stdc++.h>

using namespace std;

class number{ int x; public: number(){} number(int x):x(x){}; istream& operator>>(istream& in){ cin>>x; return in; } ostream& operator<<(ostream& out){ cout<<x; return out; } };

int main(){ number n; n>>cin; n<<cout; return 0; } ```