Difference between fgets and gets

Question

What is the difference between fgets() and gets()?

I am trying break my loop when the user hits just "enter". It's working well with gets(), but I don't want to use gets(). I tried with fgets() and scanf() but I don't have the same results as with gets(). fgets() breaks the loop whatever user enters in text! Here is my code :

void enter(void)
{
  int i,

  for(i=top; i<MAX; i++)
    {
      printf(".> Enter name (ENTER to quit): ");
      gets(cat[i].name);

      if(!*cat[i].name)
         break;

      printf(".> Enter Last Name: ");
      scanf("%s",cat[i].lastname);
      printf(".> Enter Phone Number: ");
      scanf("%s",cat[i].phonenum);
      printf(".> Enter e-Mail: ");
      scanf("%s",cat[i].info.mail);
      printf(".> Enter Address: ");
      scanf("%s",cat[i].info.address);
      printf("\n");
    }
  top = i;
}

Answer 1

A difference between gets() and fgets() is that fgets() leaves the newline in the buffer. So instead of checking whether the first element of the input is 0, check whether it's '\n';

fgets(cat[i].name, sizeof cat[i].name, stdin);
if (cat[i].name[0] == '\n' || cat[i].name[0] == 0) {
    // empty line or no input at all
    break;
} else {
    // remove the trailing newline
    int len = strlen(cat[i].name);
    cat[i].name[len-1] = 0;
}