Thread: Namespace question....

Trying to get this old noggin around Namespaces....

Code:

#include <iostream>
#include <string>

int main()
{
  { using namespace std;
    static string name;
    cout << "What is your name? ";
    getline(cin,name);
    cout << "Hello, " << name;  }

    std::cout << "Are you really, " << name;
    return 0;
}

Is there a way for the last cout to access name from the namespace above?
I either get errors saying there's no such variable or that it's not a member of std...

LOL... and I thought classes were confusing....

That's not your problem:

Code:

#include <iostream>
#include <string>

int main()
{
  { 
    using namespace std;
    static string name;
    cout << "What is your name? ";
    getline(cin,name);
    cout << "Hello, " << name;  
  }

    std::cout << "Are you really, " << name;
    return 0;
}

Clearer?

Ummm... no.... I know the namespace went out of scope... that's why I made name static... Now the question is, how to I access it from the last line?

std::name does not work....

Or does static only work within the namespace scope?

Long story... for me (and probably only for me) the way I formetted it the first time is clearer...

You didn't put the variable name into any namespace, nor did you create a namespace. Using doesn't put things into namespaces, it allows you to use variables from other namespaces in your current context. To put something into a namespace you have to do something like

Code:

namespace hey_ma_its_a_namespace {
    static string name;
}

Originally Posted by User-_-Name

Umm.. Seriously?

Why would you declare the namespace WITHIN main?

For the learning experience...

Originally Posted by tabstop

You didn't put the variable name into any namespace, nor did you create a namespace. Using doesn't put things into namespaces, it allows you to use variables from other namespaces in your current context. To put something into a namespace you have to do something like

Code:

namespace hey_ma_its_a_namespace {
    static string name;
}

AHHH... now it sinks in... thanks.

So it's like salem said... it's not the namespace at all... the variable simply went out of scope... and now I can't access it.

Thanks guys! Much appreciated.

Originally Posted by Salem

Not only did the namespace go out of scope, the symbol itself went out of scope with the closing brace.

The object still exists, but you have no way to refer to it.

So, if that was in a loop... I'd still have the name next time around?
See... now it's starting to sink in!

Code:

#include <iostream>
#include <string>

using namespace std;

namespace test
   { static string name; }


int main()
{ {  using namespace test;
     cout << "What is your name? ";
      getline(cin,name);
      cout << "Hello, " << name << endl; }

    cout << "Are you really, " << test::name;
    return 0;
}

Now it works... thanks again!