How do I use C to launch a process in linux and write to that process STDIN and collect its STDOUT and STDERR?

Question

I'm using C++ but obviously linux commands are in C

I want to launch a process with a specific argv, write to its STDIN, collect what it has written to in STDOUT/STDERR and optionally get the process exit code (I can figure out the success/fail without it).

What functions do I need to use to do this?

Answer 1

等待大神答复