fputc, fputs, putc, putchar, puts - output of characters and strings

       For an explanation of the terms used in this section, see attributes(7).
       ┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                                                                   │ Attribute     │ Value   │
       ├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │ fputc(), fputs(), putc(), putchar(), puts()                                 │ Thread safety │ MT-Safe │
       └─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘

       It is not advisable to mix calls to output functions from the  stdio  library  with  low-level  calls  to
       write(2)  for  the  file descriptor associated with the same output stream; the results will be undefined
       and very probably not what you want.

fputc() writes the character c, cast to an unsignedchar, to stream.

       putc()  is equivalent to fputc() except that it may be implemented as a macro which evaluates stream more
       than once.

       putchar(c) is equivalent to putc(c,stdout).

       fputs() writes the string s to stream, without its terminating null byte ('\0').

       puts() writes the string s and a trailing newline to stdout.

       Calls to the functions described here can be mixed with  each  other  and  with  calls  to  other  output
       functions from the stdio library for the same output stream.

       For nonlocking counterparts, see unlocked_stdio(3).

       POSIX.1-2001, C89, C99.

       Standard C library (libc, -lc)

       fputc, fputs, putc, putchar, puts - output of characters and strings

fputc(),  putc(), and putchar() return the character written as an unsignedchar cast to an int or EOF on
       error.

       puts() and fputs() return a nonnegative number on success, or EOF on error.

write(2),  ferror(3),  fgets(3),  fopen(3),  fputwc(3),  fputws(3),  fseek(3),  fwrite(3),   putwchar(3),
       scanf(3), unlocked_stdio(3)

Linux man-pages 6.9.1                              2024-06-15                                            puts(3)

       C11, POSIX.1-2008.

#include<stdio.h>intfputc(intc,FILE*stream);intputc(intc,FILE*stream);intputchar(intc);intfputs(constchar*restricts,FILE*restrictstream);intputs(constchar*s);