Supernoob problem!

Okay, so I'm using g++ and am getting an error that cout is not defined even when I include iostream:

Code:

---

#include <iostream>

int main() {
        cout << "This should show up!" << endl;
        return 0;
}

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Error:

Code:

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testclr.cpp: In function `int main()':
testclr.cpp:2: error: `cout' undeclared (first use this function)
testclr.cpp:2: error: (Each undeclared identifier is reported only once for
  each function it appears in.)
testclr.cpp:2: error: `endl' undeclared (first use this function)

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You've correctly included the 'iostream' header file, but the function 'cout' is part of a namespace within iostream called the std namespace.

After

Code:

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#include <iostream>

---

, you have to put

Code:

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using namespace std;

---

.

Or, when you use 'cout', put this instead :

Code:

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std::cout

---

. That tells the compiler which namespace you're using.

Yeah, what he said.

Code:

---

#include <iostream>

using namespace std;

int main()
{
    cout<<"This should show up!!!";
    return 0;
}

---

or

Code:

---

#include <iostream>

int main()
{
    std::cout<<"This should show up!!!";
    return 0;
}

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Option #3

Code:

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#include <iostream>

using std::cout;
using std::endl;

int main() {
    cout << "This should show up!" << endl;
    return 0;
}

---