File handling in c++

1. BY SONALI GHOLVE

2.  A file is collection of related data storage in
particular area on disk.
Output file stream
Read data
Disk
Files
C++ Program
input file stream
Data output
Write data
Data input

3.  Stream: Sequence of bits
 Input streams: Stream that supplies data to a
program.
 Output stream : Stream that receive data
from the program
 File stream: Input file and output file
collectively known as file stream
 IO stream:This stream used for both read and
write the data

5.  Open
 Close
 Read
 Write
 End of file
 Delete
 Update

6.  ios::app -> Append to end to file
 ios ::ate -> Go to end of file on opening
 ios ::binary ->Binary file
 ios ::in -> Open file for reading only
 ios :: nocreate ->Open fails if the file does not
exist
 ios ::noreplace-> Open fails if the file already
exist
 ios ::out -> Open file for writing only
 ios :: trunc ->Delete the contents of file if it
exist

7.  Input pointer (get pointer): Used when
reading the contents of file at the given
location.
 Output Pointer: Used when writing the
content into the given location.

8.  seekg() : Moves the get pointer to a specified
location.
Syntax : seekg(location);
 seekp():Moves the put pointer to a specified
location.
Syntax : seekp(location);
 tellg(): By using this function we can know the
current location of the get pointer.
Int curloc=ob.tellg();
 tellp(): By using this function we can know the
current location of the put pointer.
Int curloc=ob.tellp();

9.  Put() :Writes single character to the
associated stream
 Get() : Reads single character to the
associated stream
 Read() :To read a data in binary format
 Write() :To write a data in binary format

10. Thank you!!!!!!!!!
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sonalisagargholve@gmail.com