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C++ hello world program

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Hello world C++ program

#include <iostream> // Declaration of header

using namespace std; // Using std namespace

int main() // Function main through which program execution begins
  cout << "Hello World"; // Displaying "hello world"

  return 0; // Returning 0 indicates success to the operating system

C++ hello world program using a class


using namespace std;

// Creating class

class Message

    void display() {
      cout << "Hello World";

int main()
    Message t;    // Creating an object
    t.display();  // Calling function

    return 0;