File Handling
In programming it is not enough to just display the data on the screen. Because if data is large then it will
first take memory for store data then after it can be display on screen.
For storing the data in memory today we learn file handling.
In c programming two types of file on which we perform operation.
1. Text file
2. Binary file
Text File
This type of file are created using simple editor with (.txt ) extension and contain simple text.
Example - Notepad or other editor.
Binary File
This file contain the information in the binary code like - (1 or 0) and it is only read my machine.
It is represent by ( .bin ) extension.
Operation on file
1. Opening of file
2. Closing of file
3. Reading from file
4. Writing into file
5. Appending data into file
Mode of operation on file
File Mode Description
r
It opens an file for reading purpose.
If file does not exist , fopen() return Null
r+
It opens an file read and write purpose.
If file does not exist , fopen() return Null
w
it opens a text file for writing purpose . if file does not exist , then a new file is
created . if file exists it content are overwritten.
W+
it opens a text file for writing and reading purpose . if file does not exist , then a new
file is created . if file exists it content are overwritten
