how to wait in c++ code example

Example: c++ wait

#include <iostream>     //for using cout
#include <Windows.h>     //for using the function Sleep

using namespace std;    //for using cout

int main(void)         
{
   cout << "test" << endl;
   Sleep(5000);         //make the programme waiting for 5 seconds
   cout << "test" << endl;
   Sleep(2000);         // wait for 2 seconds before closing

   return 0;
}