fseek() vs rewind() in C

rewind()

rewind() is the function that we can use to set the position of a file pointer to the beginning of a file and it does not return any value like fseek().

Syntax

Implementation 

#include <stdio.h>
#include<stdlib.h>
int main()
{
    FILE *ptr;
    /*reading the file using fopen method*/
    ptr = fopen("test.txt","r"); 
     if(ptr==NULL)
     {
         printf("file does not exist or file is invalid");
         exit(0);
     }
      /*printing the current position of pointer*/
     printf("current position of file pointer: %ld \n", ftell(ptr));
     
     rewind(ptr);
     /*printing the position of pointer after applying rewind()*/
     printf("position of file pointer after rewind: %ld \n", ftell(ptr)); 
     
    return 0;
}

You can also try this code with Online C Compiler

Run Code

Output

fseek() vs rewind() in C

• The first difference between fseek() and rewind() is that fseek() can return a value so that we can tell whether the operation succeeded or not.
• The second difference is that rewind() only sets the position of the file pointer only at the beginning.

You can also read about dynamic array in c, and  Tribonacci Series

Must Read what is storage class in c and Decision Making in C

Frequently Asked Questions

What is file handling?

It is the process of storing data in a file with the help of a program. The programs in the C programming language use file handling to save the program's results and other data to a file. We can also extract/fetch data from a file to use in the program.

What is the fopen() function?

It is the function that we use to create a file or to read an existing file in the system.

What is the ftell() function?

It is the function that tells us about the current position of the file pointer in the console.

Conclusion

In this article, we learned about the use of fseek() and rewind() functions in C language and the main difference between both functions.

To learn more about the file handling in c or c programming, please refer to the following article:

Ternary Operator in C

Short int in C Programming

Introduction to functions,

Introduction to file handling, 

Pointers in c

Getch in C

Bubble Sort Program in C

Conditional Operator in C

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