print hello world in c 2b 2b

1#include <iostream>
2
3
4int main(){
5 std::cout <<"Hello World" << std::endl;
6 return 0;
7}
8

1#include<iostream>
2using namespace std;
3
4int main(){
5 
6  cout << "Hello World" << endl;
7  
8  return 0;
9}

1// Your First C++ Program
2
3#include <iostream>
4
5int main() {
6    std::cout << "Hello World!";
7    return 0;
8}

1// Your First C++ Program
2
3#include <iostream>
4
5int main() {
6    std::cout << "Hello World!";
7    return 0;
8}
9

1#include <iostream> // Include standard library and namespace
2using namespace std; // for c++
3
4int main () // where program starts
5{
6	cout << "Hello World!\n"; // cout (part of std) prints message
7  	return 0; // return int because main is of type int
8}

1#include <iostream>
2using std::cout;
3int main()
4{ 
5    cout<<"Hello world";
6    return 0;
7}
80
9