Drawing a Circle with Class in C++ - c++

Question

I'm currently writing a program where I have to draw three circle shapes from a class(data structure) that will output in the console.
The problem I'm having with my program is that my code compiles, however, the output goes crazy and doesn't draw the circles.
I'm still new to C++ and if anyone can help me out on how to fix this, I would appreciate it.
My Current Code:
////// Circle.h
#include <iostream>
#include <stdlib.h>
#include <sstream>
#include <time.h>
#include <cmath>
using namespace std;
class Circle
{
private:
char type;
int serialNumber = 0;
double radius = 0.0;
double density = 0.0;
public:
Circle(char, int, double);
Circle(char, int, double, double);
~Circle();
void setType(char);
void setSerialNumber(int);
void setRadius(double);
void setDensity(double);
char getType() const;
int getSerialNumber() const;
double getRadius() const;
double getDensity() const;
};
////// Circle.cpp
// #include "Circle.h"
Circle::Circle(char c, int s, double r)
{
type = c;
serialNumber = s;
radius = r;
}
Circle::Circle(char c, int s, double r, double d)
{
type = c;
serialNumber = s;
radius = r;
density = d;
}
Circle::~Circle()
{
cout << "Shapes deleted!" << endl;
}
void Circle::setType(char c)
{
if(c == 'S' || c == 'C')
type = c;
}
void Circle::setSerialNumber(int s)
{
if(s > 0)
serialNumber = s;
}
void Circle::setRadius(double r)
{
if(r > 0)
radius = r;
}
void Circle::setDensity(double d)
{
if(d > 0)
density = d;
}
char Circle::getType() const
{
return type;
}
int Circle::getSerialNumber() const
{
return serialNumber;
}
double Circle::getRadius() const
{
return radius;
}
double Circle::getDensity() const
{
return density;
}
////// main.cpp
// #include "Circle.h"
void drawAll(Circle *[], int);
void drawType(Circle *);
void drawCircle(Circle *);
void drawSpray(Circle *);
void deleteAll(Circle *[], int);
/// For 'C' type the system should display a circle.
/// For 'S' type the system displays a spray pattern just like those used in Microsoft Paint.
int main(int argc, char** argv)
{
const int SIZE = 3;
Circle * arrCircle[SIZE] = {nullptr};
arrCircle[0] = new Circle('C', 1001, 20);
/// Create a Circle whose serial number is 1001 and the radius is 20.
/// Type 'C' indicates Circle type.
arrCircle[1] = new Circle('S', 1002, 25, 30);
/// Create a Spray whose serial number is 1002, the radius is 25, and the density is 30%.
/// Type 'S' indicates Spray type.
arrCircle[2] = new Circle('S', 1003, 40, 80);
/// Create a Spray whose serial number is 1003, the radius is 40, and the density is 80%.
drawAll(arrCircle, SIZE);
/// Draw all shapes. The function uses a for loop to display the circles and sprays in arrCircle.
deleteAll(arrCircle, SIZE);
/// Delete all shapes.
return 0;
}
void drawAll(Circle *arr[], int SIZE)
{
for(int i = 0; i < SIZE; i++)
if(arr[i] != nullptr)
{
cout << "Circle #" << arr[i]->getSerialNumber() << endl;
drawType(arr[i]);
}
}
void drawType(Circle *p)
{
if(p->getType() == 'C')
drawCircle(p);
else if(p->getType() == 'S')
drawSpray(p);
}
void drawCircle(Circle *p)
{
double r = p->getRadius();
int x = 0;
int y = 0;
int rto = 2;
for(int i = 0; i <= 40; i++)
{
for(int j = 0; j <= 40; i++)
{
x = abs(i - 20);
y = abs(j - 20);
r = pow(pow(x, rto) + pow(y, rto), 0.5);
if(19.5 < r && r < 20.5)
cout << "* ";
else
cout << " ";
}
cout << endl;
}
}
void drawSpray(Circle *p)
{
double d = p->getDensity();
int x = 0;
int y = 0;
int rto = 2;
for(int i = 0; i <= 80; i++)
{
for(int j = 0; j <= 80; i++)
{
x = abs(i - 30);
y = abs(j - 30);
d = pow(pow(x, rto) + pow(y, rto), 0.5);
if(19.5 < d && d < 20.5)
cout << "* ";
else
cout << " ";
}
cout << endl;
}
}
void deleteAll(Circle *arr[], int SIZE)
{
for(int i = 0; i < SIZE; i++)
{
if(arr[i] != nullptr)
delete arr[i];
}
}
My Current Output:
Circle #1001
* * * * * * * * *
Expected Output: (example)
Circle #1001
*************
** **
** **
* *
** **
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
** **
* *
** **
** **
*************
Circle #1002
***************
*** ***
** **
* *
* *
** **
* *
* *
* *
** **
* *
* *
* *
* *
* *
* *
** **
* *
* *
* *
** **
* *
* *
** **
*** ***
***************
Circle #1003
*****************
*** ***
** **
* *
** **
* *
* *
* *
** **
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
** **
* *
* *
* *
** **
* *
** **
*** ***
*****************

Answer 1

Here is a simple algorithm it may be helpful with simple mathematics
#include <iostream>
#include <graphics.h>
int main() {
initgraph();
setcolorRGB(23, 143, 44);
int j = 400;
int r = 50; // this is the radius
for (int i = 200;i < 800;i++) {
for (int j = 200;j < 800;j++) {
int p = int(sqrt((pow(i-350,2))+(pow(j-350,2)))); // this is the distance between two points
if (r == p) {
putpixel(j,i);
}
}
}
}