perl program???

Program:
system("clear");

Output:
C:\perl\bin>perl hello9.pl
'clear' is not recognized as an internal or external command,
operable program or batch file.

Problem:
This gives out an error. What I want is to just clear the DOS screen before i run my program. How does this work???

your program is already running. if you want to clear the dos screen you can exit the program with the exit command but thats a bit redundant, because you will just have to start it again and that will give you the same text. Try ignoring the shown text. in your finished program(after compilation) you wont see the starting DOS text on the screen.