fgets adds \0 or \n at the end of the input?

Question

I\'ve some doubts about fgets. From what I know, it adds \"\\n\" at the end of the string, and not \"\\0\". So if I write this code:

fgets(buff,2,stdin);
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Answer 1

According to man page it clearly given :

 char *fgets(char *s, int size, FILE *stream);

fgets() reads in at most one less than size characters from stream and stores them into the buffer pointed to by s. Reading stops after an EOF or a newline. If a newline is read, it is stored into the buffer. A '\0' is stored after the last character in the buffer.