c++ Any circle is completely determined by its center (h, k) and radius r (x-h)^

Question

c++

Any circle is completely determined by its center (h, k) and radius r (x-h)^2 + (y-k)^2 r^2 = a Define a structure that models the data needed to determine a circle and call it circle b. Instantiate two Circle objects and allow the user to populate the data c. Write a function that displays a circle. With prototype, void printcircle (Circle arg); The cout in the function should string together a nice output. For example, sample output might look like (x-3)^2 + (y+2)^2= 25 and (x+5)^2 + (y-4)^2 16 = Run your program several times with different values for h, k and r. Be sure to account for any values for h, k and/or r that do not make sense. For example.-7. (In other words, perform some data validation here.)

Explanation / Answer

A structure Circle is created like:

struct Circle
{
    int xcenter;
    int ycenter;
    int radius;
};

2 objects are then created:

Circle circle1;
Circle circle2;

Then user input is taken using the function input()

and validations aredonr for negative radius.

Then whether the co ordinates are +ve or -ve cout displays it in a proper format in the printCircle function.

I hope its clear. If you have any more doubts, you ca comment below. All the best. :)

**********************************************************************************************************************

Code:

#include <iostream>

using namespace std;
struct Circle
{
    int xcenter;
    int ycenter;
    int radius;
};
int input()
{
    int data;
    cin >> data;
    return data;
}
void printCircle(Circle arg)
{
    if(arg.xcenter<0)
        cout << "(x+" << -arg.xcenter << ")^2 + ";
    else if(arg.xcenter>0)
        cout << "(x-" << arg.xcenter << ")^2 + ";
    else
        cout << "x" << "^2 + ";

    if(arg.ycenter<0)
        cout << "(y+" << -arg.ycenter << ")^2 = ";
    else if(arg.ycenter>0)
        cout << "(y-" << arg.ycenter << ")^2 = ";
    else
        cout << "y" << "^2 = ";

    cout << arg.radius*arg.radius << " ";
}
int main()
{
    Circle circle1;
    Circle circle2;

    cout << "Enter data for Circle 1" << endl;
    cout << "Enter the x coordinate for the center:" << endl;
    circle1.xcenter=input();
    cout << "Enter the y coordinate for the center:" << endl;
    circle1.ycenter=input();
    cout << "Enter the radius:" << endl;
    circle1.radius=input();
    while(circle1.radius<=0)
    {
        cout << "Radius of circle must be positive. Please enter again." << endl;
        circle1.radius=input();
    }

    cout << "Enter data for Circle 2" << endl;
    cout << "Enter the x coordinate for the center:" << endl;
    circle2.xcenter=input();
    cout << "Enter the y coordinate for the center:" << endl;
    circle2.ycenter=input();
    cout << "Enter the radius:" << endl;
    circle2.radius=input();
    while(circle2.radius<=0)
    {
        cout << "Radius of circle must be positive. Please enter again." << endl;
        circle2.radius=input();
    }
    printCircle(circle1);
    printCircle(circle2);
}

********************************************************************************************************************************

Sample Outputs:

**********************************************************************************************************************************

I hope this helps you.
If you find my answer helpful,
Kindly rate the answer.
All the best :)

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