stdl for short c++ program code example

Example 1: hello world c++

#include <iostream>

using namespace std;

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

Example 2: hello world c++

#include <iostream>

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