C language. Read from stdout

Question

I have some troubles with a library function. I have to write some C code that uses a library function which prints on the screen its internal steps. I am not interested to

Answer 1

You should be able to open a pipe, dup the write end into stdout and then read from the read-end of the pipe, something like the following, with error checking:

int fds[2];
pipe(fds);
dup2(fds[1], stdout);
read(fds[0], buf, buf_sz);