What does the system("cls") do?

[PLISKIN]

I'm beginner at c++. I wanted to know what does the following code mean?

(system("cls");) 

thanks

[Banfa]

system()

is a call to the OS command line, "cls" is a command on some operating systems that clears the screen.

In my opinion use of the system() function should be avoided, it doesn't really add anything to the operation of the program that can't be done other ways or just shouldn't be done and does make the program very non-portable.

[anushhprabu]

im beginner at c++ i wanted to know what does (system("cls");) means ??
thanks

system() is used to run the DOS commands from the C, C++.. cls is the clear screen command (DOS cmd)..
similarly you can use system("dir");

or

char s="cd bin";
system (cd);