puts, fputs - put a string on a stream
#include <stdio.h>
puts() writes the string pointed to by s, followed by a new-line character, to the standard output stream stdout.
fputs() writes the null-terminated string pointed to by s to the named output stream .
Neither function writes the terminating NULL character.
On success both routines return the number of characters written; otherwise they return EOF.
write(), fclose(), ferror(), fopen(), printf(), putc()
puts() appends a new-line character while fputs() does not.