ios.printf(format_string [, obj, ...] )   → nil

Formats and writes to ios, converting parameters under control of the format string. See Kernel#sprintf for details.

Source Code

/*
*  call-seq:
*     ios.printf(format_string [, obj, ...] )   => nil
*  
*  Formats and writes to <em>ios</em>, converting parameters under
*  control of the format string. See <code>Kernel#sprintf</code>
*  for details.
*/

VALUE
rb_io_printf(argc, argv, out)
   int argc;
   VALUE argv[];
   VALUE out;
{
   rb_io_write(out, rb_f_sprintf(argc, argv));
   return Qnil;
}