This tutorial by Simplilearn will explain to you What Is File Handling In C? File Handling In C Programming tutorial will help you learn the operations of file handling, the functions of file handling in c, and file opening modes in c. This C programming tutorial will cover both theoretical and practical demonstrations for a better learning experience on File Handling In C programming.

2. Agenda
What Is File Handling in C?
File Handling Operations in C
File Handling Functions in C
File Opening Modes in C

3. What Is File Handling in C?

4. What Is File Handling in C?
The data is stored in a file using a program called file handling.
The main objectives are:
• Create
• Read
• Write
• update

5. What Is File Handling in C?
Declaration:
FILE *ptr1, *ptr2;
File pointer is a variable that is used to access the files in the program to perform certain
operations on it.
Declaration:
int a, b;
The general syntax to open a file:
FILE *ptr;
ptr = fopen(“file_name”, “mode”);

6. File Handling Operations in C

7. File Handling Operations in C
Opening a file Reading from a file
Creation of a file

8. File Handling Operations in C
Moving a file Closing a file
Writing to a file

9. File Handling Functions in C

10. File Handling Functions in C
Sl. no Function Meaning
1 fopen() To open a file
2 fclose() To close a file
3 fprintf() Write to a file
4 fscanf() Read from a file
5 fputs() Write a string from file
6 fgets() Read a string from file
7 fseek() Adjust position in a file
8 rewind() Set current position to start of file
9 remove() Delete a file

11. File Opening Modes in C

12. File Opening Modes in C
Modes operation
“r” Open an existing file to read
“w” Open an existing file for writing or create a new file.
“at” Append to the end of the existing file
“rt+” Open a file for reading and writing
“wt+” Create a file for reading and writing
“at+” Append to the end of the existing file (for reading and writing)
“rb” Open a binary file for reading only
“wb” Open a binary file for writing only or create a new file.
“ab” Append to the end of existing binary file
“rb+” Open an existing binary file for reading and writing
“wb+” Create a binary file for reading and writing.
“ab+” Append to the end of existing binary file (for reading and writing)

13. File Handling Operations in C
Opening a file Example declaration:
FILE *ptr
ptr = fopen(“file1”, “w”);
Reading a file
Example declaration:
FILE *ptr
ptr = fopen(“file1”, “r”);
fscanf(ptr,”%d”,&a);

14. File Handling Operations in C
Writing a file Example declaration:
FILE *ptr
ptr = fopen(“file1”, “w”);
fprintf(ptr, “%d”,”a”);
Closing a file
Example declaration:
FILE *ptr
ptr = fopen(“file1”, “r”);
--------------------------
fclose(ptr);

15. File Handling Example Program