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  1. #include<iostream>
  2. #include<graphics.h>
  3. #include<cmath>
  4. using namespace std;
  5. void DDA(int X0, int Y0, int X1, int Y1)
  6. {
  7.     int dx = X1 - X0;
  8.     int dy = Y1 - Y0;
  9.     int steps = abs(dx) > abs(dy) ? abs(dx) : abs(dy);
  10.     float Xinc = dx / (float) steps;
  11.     float Yinc = dy / (float) steps;
  12.     float X = X0;
  13.     float Y = Y0;
  14.     for (int i = 0; i <= steps; i++)
  15.     {
  16.         putpixel (X,Y,RED);  // put pixel at (X,Y)
  17.         X += Xinc;           // increment in x at each step
  18.         Y += Yinc;           // increment in y at each step
  19.         delay(100);          // for visualization of line-
  20.                              // generation step by step
  21.     }
  22. }
  23. int main()
  24. {
  25.     int gd = DETECT, gm;
  26.     initgraph (&gd, &gm, "");
  27.     int X0 = 2, Y0 = 2, X1 = 14, Y1 = 16;
  28.     DDA(2, 2, 14, 16);
  29.     return 0;
  30. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:2:9: fatal error: graphics.h: No such file or directory
 #include<graphics.h>
         ^~~~~~~~~~~~
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/Q0ChSh
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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