Help me with this

Question

when we print sum in c program we do it like
printf{"sum is %d",sum};
how to do the same in c++

Answer 1

If you like C syntax you can include stdio.h or cstdio as well
If you are asking for C++ style there are iostream std object cout for output and cin for input.

#include <stdio.h>
#include <iostream>
using namespace std;
...
printf("sum is %d", sum);
cout << "sum is " << sum;

Answer 2

cout << "sum is " << sum << endl;