C feof() function

C library function - feof()

The feof() function indicates whether the end-of-file flag is set for the given stream.


int feof(FILE *stream)

feof() Parameters:

Name Description Required /Optional
stream Identifies an address for a file descriptor, which is an area of memory associated with an input or output stream. Required

Return value from feof()

  • The feof() function shall return non-zero if and only if the end-of-file indicator is set for stream.

Example: feof() function

This example read a text file until it reads an end-of-file character.

#include <stdio.h>

int main () {
   FILE *fp;
   int c;
   fp = fopen("file.txt","r");
   if(fp == NULL) {
      perror("Error in opening file");
   while(1) {
      c = fgetc(fp);
      if( feof(fp) ) { 
         break ;
      printf("%c", c);


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