(1) C++ MAIN STRUCTURE

#include<iostream>

using namespace std;

void main()

{

system("pause");

}

(2) . use cout to show your message

 cout<<"write your message";

2...

if you want to go on next line and start next line    see in screenshot

so first code is         

...............................................................................   

#include<iostream>

using namespace std;

void main()

{

cout<<"hey its me usman"<<endl;

system("pause");

}