Redirect stdout back to console - c++

Question

There is plenty of documentation about redirecting stdout and stderr to a file instead of the console. How do you redirect it back again? The code below shows my intention, but outputs "stdout is printed to console" only once.
I'm guessing I need to grab the console output buffer, store it somewhere, redirect stdout to file, then restore the console buffer?
#pragma warning(disable:4996)
#include <cstdio>
int main()
{
std::printf("stdout is printed to console\n");
if (std::freopen("redir.txt", "w", stdout)) {
std::printf("stdout is redirected to a file\n"); // this is written to redir.txt
std::fclose(stdout);
std::printf("stdout is printed to console\n");
}
getchar();
return 0;
}

Answer 1

With thanks to the articles in the comments above I found the information I needed. The dup and dup2 functions were what I needed. Note that based on info here dup and dup2 are deprecated in favour or _dup and _dup2. A working example can be found on MSDN here, but is duplicated below in case the link breaks in the future.
// crt_dup.c
// This program uses the variable old to save
// the original stdout. It then opens a new file named
// DataFile and forces stdout to refer to it. Finally, it
// restores stdout to its original state.
#include <io.h>
#include <stdlib.h>
#include <stdio.h>
int main( void )
{
int old;
FILE *DataFile;
old = _dup( 1 ); // "old" now refers to "stdout"
// Note: file descriptor 1 == "stdout"
if( old == -1 )
{
perror( "_dup( 1 ) failure" );
exit( 1 );
}
_write( old, "This goes to stdout first\n", 26 );
if( fopen_s( &DataFile, "data", "w" ) != 0 )
{
puts( "Can't open file 'data'\n" );
exit( 1 );
}
// stdout now refers to file "data"
if( -1 == _dup2( _fileno( DataFile ), 1 ) )
{
perror( "Can't _dup2 stdout" );
exit( 1 );
}
puts( "This goes to file 'data'\n" );
// Flush stdout stream buffer so it goes to correct file
fflush( stdout );
fclose( DataFile );
// Restore original stdout
_dup2( old, 1 );
puts( "This goes to stdout\n" );
puts( "The file 'data' contains:" );
_flushall();
system( "type data" );
}