Write a program in C/C++ to implement DDA circlegeneration algorithm
To implement the Digital Differential Analyzer (DDA) circle generation algorithm in C/C++, we need to calculate the points that lie on the circumference of a circle based on the given center and radius. The DDA algorithm uses incremental steps to plot the points, ensuring smooth rendering of the circle. This method is efficient and provides good results for circle generation on raster displays.
In the DDA circle generation algorithm, the idea is to calculate the circle's points in one octant (the first eighth of the circle) and then mirror these points to other parts of the circle. The algorithm works by calculating the pixel's coordinates at each step based on the decision variable.
Here’s the implementation of the DDA circle generation algorithm in C:
```cpp
#include <stdio.h>
#include <graphics.h>
#include <math.h>
// Function to implement DDA circle algorithm
void DDA_Circle(int xc, int yc, int r) {
int x = 0;
int y = r;
int p = 3 - 2 * r; // Initial decision parameter for circle
// Plot points in one octant and use symmetry to plot the remaining points
while (x <= y) {
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