fputc, fputs, putc, putchar, puts − output of characters and strings #include<stdio.h> , FILE *int fputc(int c , FILE *int fputs(const char *s , FILE *int putc(int c );int putchar(int c );int puts(const char *s writes the character cast to an to writes the string s to without its terminating null byte ('\0'). is equivalent to except that it may be implemented as a macro which evaluates stream more than once. )putchar(c is equivalent to , putc(c writes the string s and a trailing newline to 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 and return the character written as an unsignedchar cast to an int or EOF on error. and return a nonnegative number on success, or EOF on error. For an explanation of the terms used in this section, see ┌──────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────────────────────┼───────────────┼─────────┤ │ │ Thread safety │ MT‐Safe │ └──────────────────────────┴───────────────┴─────────┘ POSIX.1‐2001, POSIX.1‐2008, C89, C99. It is not advisable to mix calls to output functions from the stdio library with low‐level calls to for the file descriptor associated with the same output stream; the results will be undefined and very probably not what you ‐2‐ want. This page is part of release 5.07 of the Linux man‐pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man−pages/.