how can I save struct in file … C lang

Question

I\'d like to save a struct in a file. I\'d like to realize a function which makes this work. I tried this code but it didn\'t work.

struct utilisateur   //         


        

Answer 1

Try this, and then if that's not doing what you want, try explaining how it differs from what you want.

void crea_fich(struct utilisateur *Tutilis)
{
   FILE *f;
   size_t nwritten;

   f = fopen("futilis.dat","wb");

   if (f == NULL)
   {
      fprintf(stderr, "Cannot open file for writing.\n");
      exit(1);
   }

   nwritten = fwrite(Tutilis, sizeof Tutilis[0], 1, f);
   fclose(f);

   if (nwritten < 1)
   {
      fprintf(stderr, "Writing to file failed.\n");
      exit(1);
   }
}