What are the reasons why outtextxy can’t be used?

There are several possible reasons why outtextxy may not be functioning properly:

1. Necessary header file is missing: Before using the outtextxy function, you need to include the graphics.h header file. If this header file is not included, the compiler will not be able to recognize the outtextxy function.
2. The necessary library files are missing: the outtextxy function belongs to the BGI library and requires linking the corresponding library files in order to use it. If the BGI library files are not correctly linked, the compiler will show an error during the linking phase.
3. Some modern compilers no longer support the BGI library, which was designed for the Turbo C/C++ compiler in the DOS era. The outtextxy function will not work if you are using a compiler that does not support the BGI library.
4. Non-graphical mode: the outtextxy function is used to output text in graphical mode. If currently in text mode, which is non-graphical mode, calling the outtextxy function will not work.
5. The drawing environment has not been initialized: Before using the outtextxy function, you need to first call the initgraph function to initialize the graphics environment. If the drawing environment is not initialized correctly, the outtextxy function will not work properly.
6. Error in parameters: The outtextxy function requires both the coordinates and content of text as parameters. Incorrectly passing these parameters can prevent the function from working, such as when coordinates are outside the screen range or when the text content is empty.