//Shubham Mehta, Write a program to implement Digital Differential Analyzer Algorithm.
#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void main()
{
 int gd, gm;
 float x, y, x1, x2, y1, y2, slope;
 clrscr();
 printf("%s", "Please enter x1: ");
 scanf("%f", &x1);
 printf("%s", "Please enter y1: ");
 scanf("%f", &y1);
 printf("%s", "Please enter x2: ");
 scanf("%f", &x2);
 printf("%s", "Please enter y2: ");
 scanf("%f", &y2);
 slope=(y2-y1)/(x2-x1);
 gd=DETECT, gm;
 initgraph(&gd, &gm, "C:\\TC\\BGI");
 if(slope<1)
 {
  for(; x1<=x2; x1++)
  {
   y1+=slope;
   putpixel(x1, y1, RED);
  }
 }
 else
 {
  for(; y1<=y2; y1++)
  {
   x1+=slope;
   putpixel(x1, y1, RED);
  }
 }
 getch();
 closegraph();
}

This is an implementation of the DDA (Digital Differential Analyzer) Algorithm in Computer Graphics Design in the C programming language.

Graphic Design | Digital Differential Analyzer (DDA) Algorithm

C