Please tell me the difference between system ("cls") and system ("clear").

The system() function is a standard function of the c language. If you put an executable that is already created as a parameter in the form of a string, the program will run.

cls.exe is a command that clears the console window screen during DOS, and clear is a command that clears the terminal screen from Linux.

Therefore, system("cls") means to run the DOS command cls on Windows, and system("clear") means to run the Linux command clear.