Using switch with double or bool

Issue

This Content is from Stack Overflow. Question asked by raelyn

Can someone please help me with this. This is the code I currently have to handle invalid input. It’s doing what I want it to for the most part but I just found out I’m require to use switch. I’ve been trying to figure out how I could since I’m using double and bool. I’m also required to use double. I also don’t under get how I would use cases for this.

double num;
bool number = false;
  
  while (!number)
  {
    // Get initial input from the user.
    cout << "Enter a number: ";
    cin >> num;
    cout << endl;
    cin >> num;
    if (cin.fail())
    cin.clear();
    cin.ignore(100000, 'n');
    cout << "Error: A number was not entered." << endl;
    cout << "Enter a valid number:";
    cin >> num;
    
    {
    number = true;
    cout << num << endl;
    }
    return 0;
 }



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