system cls c

The system function in C++ is used to execute a command in the operating system's shell. In this case, the command being executed is cls, which is a Windows command that clears the console screen.

Here is the explanation for each step:

1. system is a standard library function in C++ that is used to interact with the operating system. It takes a command as a parameter and executes that command in the shell.

2. cls is a command used in the Windows command prompt to clear the console screen. It stands for "clear screen".

3. When the system function is called with the cls command as the parameter, it executes the cls command in the shell, which clears the contents of the console screen.

Note: It's worth mentioning that using system("cls") to clear the console screen is specific to Windows. For other operating systems like Linux or macOS, the command to clear the console screen may be different.