Question

define a file. how a file in opened and closed ?

Answer 1

a file in computer is the place where it contains some important data or document
file is opened by clicking on it and can be closed by selecting cross button

Answer 2

Function fopen() is used both toopen or create a file and fclose() is used to close an alreadyopened file. File 'read' and 'write' operations can be performed after opening a file. A file which is opened needs to be closed in order to avoid memory leakage.

Opening and Closing Files. Use Opento open a document file stored on your computer. Tip: You can open more than one file at a time by pressing the Ctrl key as you select additional files in the Open window. You can also open a range of files by pressing the Shift key to select the last file in a range.