system call?

[stud]

can someone please kindly tell me what is a system call?
and what it does?

thanks.

[iisbob]

Welcome to the http://www.pcguide.com/ubb/pcgubb.gif !

A system call is simplely the process a program uses to access files on your system.
It's related to the operating system and how it performs low level functions like making file directories, etc...

When you invoke a program it makes a " system call " on the OS & certain hardware components to perform it's function.

Hopefully this is clear enough for you to understand. http://www.PCGuide.com/ubb/smile.gif

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iisbob

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