IT. Expert System.

C++

ferror

Checks if the error indicator associated with stream is set, returning a value different from zero if it is.

Syntax:

int ferror ( FILE * stream );

Example:

#include 
int main ()
{
  FILE * pFile;
  pFile=fopen("myfile.txt","r");
  if (pFile==NULL) perror ("Error opening file");
  else {
    fputc ('x',pFile);
    if (ferror (pFile))
      printf ("Error Writing to myfile.txt\n");
    fclose (pFile);
  }
  return 0;
}

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