Redirecting stdout to a file in C through code

Question

Hi,

I am having the output in stdout. how to redirect that to a new file through code ? While we run the program we can redirect like ./sample > test.txt. how to make this happen when executing the sample program itself ? (C programming)

Thanks, Vinod.

Answer 1

Use freopen().

Answer 2

You probably want to use freopen.

Example from reference:

#include <stdio.h>
...
FILE *fp;
...
fp = freopen ("/tmp/logfile", "a+", stdout);