For the conditions under which dprintf(), fprintf(), and printf()
fail and may fail, refer to fputc(3p) or fputwc(3p).
In addition, all forms of fprintf() shall fail if:
EILSEQ A wide-character code that does not correspond to a valid
character has been detected.
EOVERFLOW
The value to be returned is greater than {INT_MAX}.
The dprintf() function may fail if:
EBADF The fildes argument is not a valid file descriptor.
The dprintf(), fprintf(), and printf() functions may fail if:
ENOMEM Insufficient storage space is available.
The snprintf() function shall fail if:
EOVERFLOW
The value of n is greater than {INT_MAX}.
The following sections are informative.
