C library function - feof()

Description

The C library function int feof(FILE *stream) tests the end-of-file indicator for the given stream.

Declaration

Following is the declaration for feof() function.

int feof(FILE *stream)

Parameters

• stream − This is the pointer to a FILE object that identifies the stream.

Return Value

This function returns a non-zero value when End-of-File indicator associated with the stream is set, else zero is returned.

Example

The following example shows the usage of feof() function.

#include <stdio.h>

int main () {
   FILE *fp;
   int c;
  
   fp = fopen("file.txt","r");
   if(fp == NULL) {
      perror("Error in opening file");
      return(-1);
   }
   
   while(1) {
      c = fgetc(fp);
      if( feof(fp) ) { 
         break ;
      }
      printf("%c", c);
   }
   fclose(fp);
   
   return(0);
}

Assuming we have a text file file.txt, which has the following content. This file will be used as an input for our example program −

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Let us compile and run the above program, this will produce the following result −

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