File pointers allow programmers to control the position in a file where read or write operations take place. There are four functions - seekg(), tellg(), seekp(), and tellp() - that respectively set or get the position of the get and put pointers used for input and output files. Each function either moves a pointer to a specified location defined by an offset and reference position, or returns the current position of the pointer.

1. FILE POINTERS AND
THEIR MANIPULATORS
-Megul raj

2. File Pointers
• The c++ I/O system supports four functions for
setting a file pointer to any desired position
inside the file or to get the current file pointer.
• These allow programmer to have control over a
position in the file where the read or write
operation takes place.

3. FUNCTION MEMBER OF CLASS
seekg() ifstream
tellg() ifstream
seekp() ofstream
tellp() ofstream
There are two pointers in the class fstream – the put pointer used for
writing and the get pointer used for reading

4. seekg()
Moves get file pointer(input)to a specified location.
Syntax:
seekg( offset, refposition);
tellg()
Gives the current position of the get pointer.
Syntax:
pos_type tellg ();

5. seekp()
Moves put file pointer(output)to a specified location.
Syntax:
seekp( offset, refposition);
tellp()
Gives the current position of the put pointer.
Syntax:
pos_type tellp ();