Input Output

For now, we will use cin cout from iostream library.

To use it, you have to write

#include<iostream>

Input
If you want your variable to store value from the input, example :

int a;
cin >> a;

or

int a,b;
cin >> a >> b;


Output
If you want to show something to screen, example :

int a = 5;
cout << a;
cout << a << endl;
cout << a;

endl is for new line.
So it will show :
55
5