Check for errors: How to use ferror



#include <stdio.h>

int main ()
{

  FILE *file;
  file = fopen("my.txt","r");
  
  if (file==NULL) 
      perror ("Error opening my.txt");
  else {
    fputc ('e',file);
    if (ferror (file))
      printf ("Error Writing to my.txt\n");
    fclose (file);
  }
  return 0;
}

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Check for errors: How to use ferror : File Read « File « C / ANSI-C

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