Question

I am implementing a Visual C++ project and it use Windows forms. I need to use C++ stack and I used stack<>. But it gives this error. I include #include <stack> and using namespace std; Before adding using namespace std; it says undeclared identifier. But after adding that it gives this error. I am new to C++. Can anyone explain me why this happens. Thanks…!

Part of my Code:

stack<int> TA;
stack<int> TB;
stack<int> TC;

void move_a_to_b(){

  if(TB.top() < TA.top()){
     B[index_of_b + 1]->Image = A[index_of_a]->Image;
     B[index_of_b + 1]->Visible = true;
     A[index_of_a]->Visible = false;
     index_of_a--;
     index_of_b++;
     TB.push(TA.top());
     TA.pop();
  }
  else
     MessageBox::Show("Invalid Move","Error",MessageBoxButtons::OK,MessageBoxIcon::Exclamation);
}

Answer 1

I found the solution. This happens because of I am using unmanaged version of stack with managed version. the stack must not be initialized with the new keyword.