Why not: using namespace std;

[graciano]

Hi,
I know this has been discussed but ...
Why showld i use ...

#include <iostream>
using std::cout;
int main()
{
	cout << "hello\n";
	return 0;
}

...instead of ...

#include <iostream>
using namespace std;
int main()
{
	cout << "hello\n";
	return 0;
}

Just starting a discussion before i make other related question :)

[helios]

Who said you should use using at all?

[z05DSL3A]

using Declarations and using directive have different effects.
http://www.cplusplus.com/forum/beginner/9181/#msg42419

[graciano]

Who said you should use using at all?

Are you refering to this approach?

#include <iostream>
int main()
{
	std::cout << "hello\n";
	return 0;
}

Is it not the same thing? (in this case)