------------------------------------
#include <iostream> // iostream을 사용
using namespace std;
int main()
{
cout << "Hi..!" << endl;
return 0;
}
------------------------------------
#include <iostream>
using std::cout;
using std::endl;
int main()
{
cout << "Hi..!" << endl;
return 0;
}
------------------------------------
#include <iostream>
int main()
{
std::cout << "Hi..!" << std::endl;
return 0;
}
-------------------------------------
