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LETTERferrorULETTER Check for errors associated with the file.

Overview
#include <stdio.h>

r = ferror(fp);

int r; // result
FILE *fp; // file pointer

Portability
ANSI

Description
This function checks if any error occured while operating on the file pointed to by "fp". It returns the error code, if an error occured, and 0 otherwise.

Returns
If no error has occured yet, zero is returned, a value unequal 0 otherwise.

See also
clearerr , feof , fopen , gets , perror