C\linux - safe reading from input

I have read that is unsafe read from stdin like I do:

[code]
char buffer[40];
fscanf(stdin, "%s", buffer);
[\code]

Anyone know a safe way to do this? I am a noob linux user.

Actually you can do it in two ways:
First you can use fgets, read :
http://faq.cprogramming.com/cgi-bin/...&id=1043284351
But if you are a alternative guy, you can use the fscanf like this:

Code:

   char buffer[LENGTH+1]; //using LENGTH+1 to store de '\n'
   fscanf(stdin,"%LENGTHs",buffer);

Where LENGTH is macro specifing the length of the string

That helps me a lot...