Step 1 :- Download the latest version of Dev C++ from here and install it on your computer.

Step 2 :- Download the graphics library files from here and extract them. You will get three files: graphics.h, winbgim.h, and libbgi.a. 

Step 3 :- Copy graphics.h and winbgim.h to the include folder of Dev C++. The default location is C:\Program Files (x86)\Dev-Cpp\MinGW64\include. 

Step 4 :- Copy libbgi.a to the lib folder of Dev C++. The default location is C:\Program Files (x86)\Dev-Cpp\MinGW64\lib. 

Step 5 :- Open Dev C++ and go to Tools -> Compiler Options. Select the Parameters tab and check the box for “Add the following commands when calling the linker”. 

Step 6 :- In the linker text area, paste the following commands:

-lbgi -lgdi32 -lcomdlg32 -luuid -loleaut32 -lole32. These are the required linkers for graphics.h file.

Step 7 :- Click OK to save the changes and close the window. 

Step 8 :- To test if graphics.h file is working, you can create a new project and write a simple program that uses graphics functions. For example:

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#include<graphics.h>

 int main()

 {

     int gd = DETECT, gm;

     initgraph(&gd, &gm,"C:\\TC\\BGI");

     circle(200, 200, 100);

     getch();

     closegraph();

     return 0;

 }