The **`feof()`** function in C detects the end of a file. 

To use the `feof()` function, the ﻿program needs to include the `stdio.h` header file ﻿as shown below:
```C
#include <stdio.h>
```

# Parameters and Return Value
The `feof()` function only accepts a pointer to a `FILE` object as the parameter.


`feof()` returns a single non-zero value of type `int` if the end of a file is reached, otherwise it returns a 0. 

# Examples
The following code demonstrates how to open, read, and detect the end of a file:

#include <stdio.h>

int main()
{
  // open a file
  FILE *ptr = fopen("educative.txt","r");
  // check for error
  if(ptr == NULL)
  {
      printf("Error opening file");
  }
  // check for end of file
  while(!(feof(ptr)))
  {
      //get the character and print
      printf("%c", fgetc(ptr));
  }
  // close the file
  fclose(ptr);

}


# Explanation
* The above code employs the `fopen()` function to open the `educative.txt` file. The program stores the file pointer in `ptr` and checks for a `NULL` value to detect any errors.
* The `fgetc()` function displays one character of the file at a time in a `while` loop. `fgetc()` returns the character indicated by the file pointer and advances the file pointer onto the next character.
* The `while` loop terminates once the `feof()` function detects the end of the file


How to use foef() in C

feof() in C detects the end of a file, returning non-zero if reached, otherwise 0.