Question

We have %x in C to print any decimal value as hex value like this

printf("%x",a); // here a is having some integral value

Similarly, can we print this directly in C++ without any much extra effort or without addition of extra header file like <iomanip>?

Answer 1

#include <iostream>
std::cout << std::hex << a;

You need <iostream> for C++ style output anyway, so it’s not an “extra” header.