Hello World

[tieuyentu]

Hi guys!
Can someone help me: Please edit the program but not edit main fucntion. Make this code print like folow this:

Entering the Hello program saying...
Hello, world.
Then exiting..

.

#include <iostream>
int main(){
    std::cout << "Hello, world.\n";
}

[kbw]

Use global instance of a class. The constructor runs before main, and the destructor runs after main.

[1v5E3TCk]

It is not easy without changing the main but you can do something like that:

#include <iostream>

struct Notifier
{

    Notifier()
    {
        std::cout << "Entering the Hello program saying...\n";
    }

    ~Notifier()
    {
        std::cout << "Then exiting..\n";
    }
} notify;



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