e_t n, const char *format, va_list args);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>BIO_printf() is similar to the standard C printf() function, except that the output is sent to the specified BIO, <i>bio</i>, rather than standard output. All common format specifiers are supported.</p>

<p>BIO_vprintf() is similar to the vprintf() function found on many platforms, the output is sent to the specified BIO, <i>bio</i>, rather than standard output. All common format specifiers are supported. The a