How to store user input in variable that is a different value than in the variable initialization in default constructor?

[jshapy8]

Sorry for the lengthy title of this post. However, I believe it sums up the issue I am having. I have a default constructor that sets these defaults every time an object gets called:

    Circles::Circles()
    {
       radius = 1;
       center_x = 0;
       center_y = 0;
    }

However, I want to give the user the option enter their own values. This would mean that the default values of radius, center_x and center_y must be ignored somehow. I set up the prompt like this:

    char enter;    // for user selection
    	float rad = 1; // for user selection
    	int x = 0, y = 0;     // for user selection
    
    	cout << "Would you like to enter a radius for sphere2? (Y/N): ";
    	cin.get(enter);
    
    	if (toupper(enter) != 'N')
    	{
    		cout << "Please enter a radius: ";
    		cin >> rad;
    	}
    
    	cout << endl;
    
    	cout << "Would you like to enter a center for sphere2? (Y/N): ";
    	cin.clear();
    	cin.ignore();
    	cin.get(enter);
    
    	if (toupper(enter) != 'N')
    	{
    		cout << "Please enter x: ";
    		cin >> x;
    		cout << "Please enter y: ";
    		cin >> y;
    	}
    
    	cout << endl << endl;
   
    	if (toupper(enter) == 'Y')
    		Circles sphere2(rad, x, y);
       Circles sphere2;

I want to pass rad, x, and y to this overloaded constructor:

Circles::Circles(float r, int x, int y)
{
   radius = r;
   center_x = x;
   center_y = y;
}

This is how the output gets sent to the screen:

cout << "Sphere2:\n";
cout << "The radius of the circle is " << radius << endl;
cout << "The center of the circle is (" << center_x 
     << "," << center_y << ")" << endl;

At last, we arrive at the problem that the default values get printed:

"The radius of the circle is 1 The center of the circle is (0,0)"

Why is this happening?

[LendraDwi]

line 33 you redifine object sphere2 with default constructor
and sphere2 that defined before is destroyed after if ended

[maeriden]

Line 32 is scoped to the if statement. It's the same as writing

// ↓ new scope starts here
if(toupper(enter) == 'Y')
{
	Circles sphere2(rad, x, y);
} // end scope 

sphere2 is defined inside this scope, so it doesn't exist outside of it. For this reason line 33 is not giving you an error: redefining a variable is illegal, but since the first sphere2 doesn't exist here you can create a different object named sphere2.