how to print out hello in c++ code example

Example 1: hello world c++

#include <iostream>

using namespace std;

int main() {
 cout << "Hello World" << endl;		// endl = '\n'
 return 0;
}

Example 2: how to write hello world c++

#include <iostream> 

int main () 
{
  std::cout << "Hello world" << endl; 
  return 0;
}