putchar

Introduction

The version implemented in this libft is not the one from the libft PDF subject:

#include "libft.h"

ssize_t ft_putchar_fd(unsigned int c, int fd);

• The ft_putchar_fd() function shall outputs the unicode character c to the file descriptor fd in UTF-8 format.
• Upon successful completion, ft_putchar_fd() shall return the number of bytes actually written to the file associated with fd. This number shall be between 0 and 4 bytes. Otherwise, -1 shall be returned and errno set to indicate the error.

The following calls are equivalent.

ft_putchar(c);
ft_putchar_fd(c, STDOUT_FILENO);

Note

Beside the different prototype, this implementation introduces several non-requested behaviors:

• The return value of write() is returned.
• If c is an unicode code point (instead of an ASCII character), the character is written in UTF-8

Further Reading

• UTF-8 Char Table
• POSIX write