basic c++ hello world code example

Example 1: hello world c++

#include <iostream>


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

Example 2: hello world c++

#include <iostream> // Include standard library and namespace
using namespace std; // for c++

int main () // where program starts
{
	cout << "Hello World!\n"; // cout (part of std) prints message
  	return 0; // return int because main is of type int
}

Example 3: how to write hello world c++

#include <iostream> 

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