How do I run, give input and get output from another process using C++

Asked Jul 13 '20 at 19:57

Active Jul 13 '20 at 19:57

Viewed 214 times

I'm currently making my own in-terminal Chess GUI and I've made it compatible with the Universal Chess Interface (UCI) for Chess engines. I'd like to connect the GUI to stockfish.exe (chess engine) by passing UCI commands from my program into the chess engine and receiving output from the separate chess engine process.

How do I approach this problem?

asked Jul 13 '20 at 19:57

Xiao

2

pipes are the usual way to do this – john Jul 13 '20 at 19:59
[popen](https://stackoverflow.com/q/45202379/10077) might be one way to accomplish this. – Fred Larson Jul 13 '20 at 20:04
@FredLarson Right, I failed to notice that. Pipes are still probably the way to go however. – john Jul 13 '20 at 20:05
@john: Yes, and I think `popen` gives you only one of the pipes needed. I think my suggestion is insufficient. – Fred Larson Jul 13 '20 at 20:07
1

@FredLarson There is `popen2` – john Jul 13 '20 at 20:16
@john: Is `popen2` standard? I'm not finding much about it. – Fred Larson Jul 13 '20 at 20:22
@FredLarson I thought it was but it seems not. So I guess you have to do everything by hand, fork, exec, pipe and all that stuff. I shouldn't say any more since I'm not an expert. I'm sure a google search can find plenty of examples. – john Jul 13 '20 at 20:27

How do I run, give input and get output from another process using C++

0 Answers0