How do i enable/disable a loop with getasynckeystate()

I need a code example of being able to put something in a loop and then being able to disable and enable it by pressing a key.

I know how to enable and disable stuff

Code:

---

if (GetAsyncKeyState(VK_F11))
                    {
                    if(!keyWasPressed)
                        {
                        keyWasPressed = true;
                            cout << "\n Enabled" << endl;
Skip();
                            Sleep(400);
                        }
                    else
                        {
                        keyWasPressed = false;
                            cout << "\n Disabled" << endl;
                          Sleep(400);
                        }
                    }

---

But how do i make it so that when they press F11 it constantly does this code

Code:

---

cout << "\n Enabled" << endl;
Skip();

---

but as soon as they hit F11 again is disables the loop

You'd be better explain what you are trying to achieve!
Then you could, perhaps get some suggestions about how to do/implement it.

BTW, where is the code you posted supposed to work? In what application/process/thread?